Roasting is the simplest way to make vegetables taste like something you actually want to eat. High, dry heat drives off surface moisture, browns the natural sugars, and turns a pale, watery carrot into something sweet, nutty, and a little crisp at the edges. You do not need a recipe, special equipment, or much skill. You need a hot oven, a sturdy pan, a bit of fat, salt, and enough patience to leave the vegetables alone while they brown.

What trips people up is not the technique but the details: pieces cut at wildly different sizes, a pan so crowded that everything steams, an oven that was never fully preheated, or seasoning added at the wrong moment. This guide walks through all of it. You will find a default method that works for nearly everything, a timing chart for common vegetables, notes on each one, ways to season without leaning on a bottle of dressing, and straight answers about storage, leftovers, and the problems that are worth fixing before you cook.

Key takeaways

  • Start at 425 degrees F (220 degrees C) for most vegetables, and drop to 400 F (200 C) for dense, large pieces that need more time to cook through.
  • Cut pieces to a similar size, roughly 1 to 1.5 inches (2.5 to 4 cm), so they finish together.
  • Use about 1 to 2 tablespoons of oil per pound (450 g) of vegetables, enough to coat lightly but not pool in the pan.
  • Give the vegetables space. A single layer with gaps between pieces browns; a crowded pan steams.
  • Preheat the oven fully, and preheat the pan too if you want better browning on the bottom.
  • Salt before roasting, add delicate herbs and acid after, and add sugary glazes only in the last 10 minutes.
  • Refrigerate leftovers within 2 hours and eat them within 3 to 4 days.

Why Roasting Works So Well

Vegetables are mostly water. When you boil or steam them, that water stays put, and the flavor tends to stay mild and sometimes bland. Roasting at 400 F (200 C) or above does something different. Moisture on the surface evaporates quickly, and once the surface dries out, it can climb past the temperature of boiling water. That is where browning happens.

The browning you are after

Two processes create the flavor that makes roasted vegetables appealing. Caramelization is the breakdown of sugars at high heat, which is why onions, carrots, and squash turn sweet and deep golden. The Maillard reaction involves sugars and amino acids and produces savory, toasty notes, which is why roasted cauliflower and Brussels sprouts taste almost meaty. Both need dry surfaces and real heat. Neither happens well at 325 F (165 C), and neither happens at all in a pan full of steaming, overlapping pieces.

What roasting does to texture

Inside, the heat softens the cell walls, so the center turns tender or creamy. Outside, the dried surface becomes a thin crust. Good roasted vegetables have both: a soft middle and crisp, browned edges. If you only get one of the two, the fixes are usually about temperature, spacing, or cut size, and they are covered below.

Equipment That Actually Matters

You can roast vegetables with very little gear, but a few choices make a visible difference.

The pan

A heavy, rimmed baking sheet in a light-to-medium finish is the workhorse. Thin, warped pans heat unevenly and buckle with a pop when they hit a hot oven. Dark pans brown faster and can scorch the bottoms of sugary vegetables, so keep an eye on them. A cast iron skillet or a roasting pan works too, as long as the vegetables sit in a single layer. A deep roasting pan with high sides traps steam, which is the opposite of what you want, so use a shallow one.

Parchment, foil, or bare metal

Parchment paper makes cleanup easy and prevents sticking, and it still allows good browning on the underside. Bare metal gives the best crust but needs enough oil and a little scraping afterward. Foil is fine for cleanup, but it can stick to starchy vegetables. Whatever you use, check the temperature rating on parchment packaging, since some brands are only rated to about 420 to 450 F (215 to 230 C).

Oven rack position and a thermometer

Put the rack in the middle for most batches. Move it to the upper third if you want faster browning on thin pieces such as asparagus or sliced zucchini. Many home ovens run 15 to 25 degrees off from the dial setting, so an inexpensive oven thermometer hanging from a rack tells you the truth. If your oven is consistently off, you can adjust the dial to compensate.

A sturdy spatula

A wide metal spatula lets you scrape up the browned bits and flip pieces without tearing them. Tongs work for large wedges and halved vegetables.

The Basic Method, Step by Step

This is the default approach. Adjust it with the vegetable-specific notes later.

  1. Preheat. Set the oven to 425 F (220 C) and wait until it reaches temperature, then give it another 10 minutes so the walls and racks are heated through. Putting the pan in while the oven warms up gives the vegetables a head start on browning.
  2. Wash and dry. Rinse vegetables under cool running water, scrubbing firm ones with a brush. Dry them thoroughly with a clean towel. Wet vegetables steam before they brown.
  3. Cut evenly. Aim for pieces about 1 to 1.5 inches (2.5 to 4 cm). Keep flat sides where you can, since a flat surface touching the pan browns better than a round one.
  4. Oil and salt. Toss in a large bowl with 1 to 2 tablespoons of oil per pound (450 g) and about 1/2 teaspoon of kosher salt per pound. Tossing in a bowl coats more evenly than drizzling on the pan.
  5. Spread out. Arrange in a single layer, cut side down when possible, with a little space between pieces. Use two pans rather than crowding one.
  6. Roast and turn. Roast for the first half of the time, then stir or flip once. Dense vegetables may need a second turn. Resist poking at them more often than that, because contact time with the hot pan is what builds the crust.
  7. Test. Pierce the thickest piece with a fork or paring knife. It should slide in with little resistance, and the edges should be browned.
  8. Finish. Taste, then adjust with salt, a squeeze of citrus, a splash of vinegar, fresh herbs, or a sprinkle of cheese.

Choosing Your Temperature

There is no single perfect temperature, but there are sensible ranges, and picking the right one comes down to how dense and how thick the vegetable is.

425 F (220 C): the all-purpose setting

This is a good default for broccoli, cauliflower, Brussels sprouts, carrots, parsnips, bell peppers, onions, and summer squash. It is hot enough to brown quickly and gentle enough that thick pieces cook through before burning.

400 F (200 C): for large or dense pieces

Whole beets, large wedges of winter squash, big chunks of potato, and halved sweet potatoes do better slightly cooler. The longer cooking time lets the center soften before the outside darkens too far. If you are roasting a sheet pan of mixed vegetables at the same time as chicken or another main dish, 400 F is often the compromise temperature.

450 F (230 C): for thin or quick-cooking vegetables

Asparagus, green beans, sliced zucchini, cherry tomatoes, and thin slices of onion can handle an extra-hot oven. The short cooking time means less chance of drying out, and you get color before the vegetables collapse.

Below 400 F (200 C)

Roasting at 350 F (175 C) is possible when the oven is already occupied, but expect softer vegetables with less browning and add 10 to 20 minutes. Whole heads of garlic and slow-roasted tomatoes are the exceptions, where lower heat is the point.

Convection settings

A convection fan moves hot air across the surface and speeds up drying and browning. A common adjustment is to lower the temperature by 25 degrees F (about 15 C) or shorten the time by about 20 percent. Check your owner’s manual, because ovens differ. Vegetables on a convection setting often need to be turned a little earlier since the edges brown faster.

Roasting Times at a Glance

These times assume a preheated oven, pieces cut to roughly 1 to 1.5 inches (2.5 to 4 cm) unless noted, and a single layer. Treat them as starting points. Your oven, pan, and the size of the vegetable all shift the numbers.

Vegetable Cut Temperature Time
Asparagus Whole spears, woody ends snapped off 450 F (230 C) 8 to 12 minutes
Green beans Whole, trimmed 450 F (230 C) 12 to 18 minutes
Zucchini or yellow squash Half-inch (1.3 cm) half-moons or spears 425 F (220 C) 15 to 20 minutes
Broccoli Medium florets 425 F (220 C) 18 to 25 minutes
Cauliflower Florets or half-inch (1.3 cm) steaks 425 F (220 C) 20 to 30 minutes
Brussels sprouts Halved 425 F (220 C) 20 to 30 minutes
Bell peppers Strips or 1-inch (2.5 cm) pieces 425 F (220 C) 20 to 25 minutes
Red onion or yellow onion Wedges 425 F (220 C) 25 to 35 minutes
Carrots Half-inch (1.3 cm) thick coins or sticks 425 F (220 C) 25 to 35 minutes
Parsnips Sticks or coins 425 F (220 C) 25 to 35 minutes
Mushrooms Halved or quartered 425 F (220 C) 20 to 25 minutes
Potatoes 1-inch (2.5 cm) chunks 425 F (220 C) 30 to 40 minutes
Sweet potatoes 1-inch (2.5 cm) chunks 425 F (220 C) 25 to 35 minutes
Butternut squash 1-inch (2.5 cm) cubes 425 F (220 C) 25 to 35 minutes
Beets 1-inch (2.5 cm) wedges 400 F (200 C) 35 to 45 minutes
Beets Whole, medium, wrapped in foil 400 F (200 C) 50 to 70 minutes
Cherry tomatoes Whole 425 F (220 C) 12 to 18 minutes
Eggplant 1-inch (2.5 cm) cubes 425 F (220 C) 25 to 30 minutes
Fennel Wedges 425 F (220 C) 25 to 35 minutes

Vegetable-by-Vegetable Notes

A chart gets you close. The details below get you the rest of the way.

Broccoli and cauliflower

Both are forgiving and both love high heat. Cut florets so each has a flat face, then place that face down on the pan. For broccoli, include some of the peeled, sliced stem, which turns sweet and tender. The little loose bits of floret that crisp up like chips are the best part, so do not discard them. For cauliflower, thick slices cut through the head give you large flat surfaces that brown beautifully, though florets are easier to season evenly. Watch for scorching at the tips of broccoli; pull the pan out as soon as the edges are dark brown rather than black.

Brussels sprouts

Trim the stem end, remove any loose or yellowed outer leaves, and halve them from top to bottom. Place them cut side down, and leave them alone for the first 10 to 12 minutes so a deep brown crust forms. Smaller sprouts can go in whole and take a few extra minutes. Any leaves that fall off will crisp into something close to a chip. If you like a little sweet-and-sour finish, toss with a drizzle of balsamic vinegar or maple syrup in the last few minutes only.

Carrots and parsnips

These two are naturally sweet and become sweeter as they roast. Cut thick carrots in half lengthwise and then into sticks, or slice on a bias into coins about a half-inch (1.3 cm) thick. Keep pieces similar, because thin tips burn while thick ends stay firm. Parsnips can have a woody core in older, larger specimens. If the center feels fibrous when you cut it, trim it out. Baby carrots can be roasted whole but tend to turn leathery rather than caramelized, so full-size carrots usually taste better.

Potatoes and sweet potatoes

Starchy vegetables need the longest time and benefit from the hottest pan. Pat the cut pieces very dry. For crisper results, some cooks soak cut potatoes in cold water for 20 to 30 minutes to remove surface starch, then dry them completely before oiling. Waxy potatoes such as red or fingerling hold their shape and develop creamy centers, while russets turn fluffy inside with craggy edges. Sweet potatoes burn more easily at the edges because of their sugar, so keep an eye out and turn them once. If you have more on potato dishes in mind, the same principles carry over to other recipes: dry surface, plenty of fat, hot pan, and no crowding.

Winter squash

Butternut, acorn, delicata, and kabocha all roast well. Delicata has a thin, edible skin, so you can slice it into half-moons and leave the skin on. Butternut is easier to handle if you pierce it, microwave it for 2 to 3 minutes to soften the skin slightly, and then peel and cut it with a sharp knife on a stable board. Use caution here. Hard squash is one of the more common causes of kitchen knife injuries, so cut a thin slice off one end to create a flat, steady base before you do anything else.

Asparagus and green beans

These are quick. Asparagus should be bent near the base until it snaps; the break happens where the tough part ends. Thick spears take 10 to 12 minutes at 450 F (230 C), while pencil-thin spears may finish in 6 to 8. Green beans wrinkle and blister at the edges when roasted, which concentrates their flavor. Use a single layer and a very hot oven for the best result.

Onions, peppers, and fennel

Onion wedges, held together by a bit of the root end, roast into sweet, jammy pieces with charred tips. Red onions turn a deep magenta and mellow considerably. Bell peppers soften and sweeten, and their skins loosen if you want to peel them, though that is not necessary for most dishes. Fennel loses its sharp anise bite and turns silky. Cut fennel into wedges through the core so each piece stays together.

Mushrooms

Mushrooms release a surprising amount of water. Roast them on a hot pan with plenty of space, and do not wash them under running water beforehand, since they absorb it. Wipe them with a damp paper towel instead. They shrink by about half, so start with more than you think you need. Salt them after they have browned if you want to limit the water they release.

Tomatoes and eggplant

Cherry tomatoes blister and burst in about 15 minutes, creating their own sauce. Larger tomatoes halved and roasted cut side up at a lower temperature, around 300 F (150 C), concentrate for an hour or more. Eggplant acts like a sponge for oil, so use a little less than you would expect and add more only if the pieces look dry. Cube it, salt it lightly, and roast until deeply golden and creamy inside. Eggplant that is undercooked has a spongy, slightly bitter texture, so err on the side of more time.

Beets

Beets take the longest. Wrap whole, scrubbed beets in foil with a splash of water and roast until a knife slides in easily, then rub the skins off with a paper towel once they are cool enough to handle. Wedges roast faster without foil and brown at the edges. Wear gloves or expect pink fingers, and use a board that stains easily or cover it with parchment.

Oil, Salt, and Fat

How much oil is enough

The common mistake is too little oil, which leaves vegetables dry and leathery, followed closely by too much, which makes them greasy and prevents crisping. One to two tablespoons per pound (450 g) is the right range. A pound is roughly a medium head of cauliflower, a large bunch of broccoli, or six medium carrots. Greener, higher-water vegetables like zucchini need less, and absorbent ones like eggplant and mushrooms need more.

Which oils work

For 425 F (220 C) and above, choose an oil that handles heat without burning. Refined olive oil, avocado oil, canola, sunflower, and grapeseed all work well. Extra virgin olive oil is fine at 400 F (200 C) and gives more flavor, though it can taste slightly bitter if it begins to smoke. Melted butter adds richness but the milk solids brown and can burn at high heat, so add butter at the end, or use ghee. Note that butter, ghee, and many seasoning blends contain dairy, nuts, or other common allergens, which matters if you cook for guests.

Salt and timing

Salt before roasting. It seasons the vegetable evenly and helps pull a little surface moisture out, which assists browning. Kosher salt is easy to pinch and distribute. If you use fine table salt, use less, since it packs more tightly. Season lightly at the start and adjust at the end, when you can taste what you have.

Seasonings and Flavor Combinations

Roasted vegetables are a blank canvas, and the best seasoning plans consider what holds up to heat and what does not.

Add before roasting

Dry spices and sturdy herbs stand up to a 425 F oven. Good options include black pepper, smoked or sweet paprika, ground cumin, coriander, chili powder, garlic powder, onion powder, dried oregano, rosemary, and thyme. Whole garlic cloves, left in their skins, turn soft and sweet as they roast. Minced fresh garlic, on the other hand, burns and turns bitter in minutes, so add it in the last 5 minutes or stir it in afterward.

Add in the last 5 to 10 minutes

Sugary and sticky ingredients, such as honey, maple syrup, balsamic vinegar, and glazes, blacken quickly when added at the start. Toss them on near the end. Grated hard cheese like Parmesan can go on for the last 5 minutes to form a golden crust. Breadcrumbs and chopped nuts also toast quickly and do best late.

Add after roasting

Fresh herbs such as parsley, cilantro, dill, mint, and basil lose their brightness in a hot oven. Scatter them over the finished vegetables. The same goes for citrus zest and juice, vinegar, and fresh chili. A little acid at the end wakes everything up, and it makes a bigger difference than most people expect.

Flavor combinations that work

  • Broccoli: garlic, lemon zest, red pepper flakes, and Parmesan.
  • Carrots: cumin and coriander with a spoonful of yogurt and fresh mint afterward.
  • Cauliflower: curry powder or turmeric with a squeeze of lime.
  • Brussels sprouts: a little balsamic vinegar and toasted pecans or walnuts.
  • Sweet potatoes: smoked paprika and a pinch of cayenne, or cinnamon and a drizzle of maple syrup.
  • Green beans: sesame oil, soy sauce, and toasted sesame seeds added after roasting.
  • Zucchini: dried oregano, black pepper, and crumbled feta once it comes out.
  • Beets: orange zest, a splash of red wine vinegar, and soft goat cheese.
  • Potatoes: rosemary, black pepper, and flaky salt.
  • Squash: sage, brown butter, and a squeeze of lemon.

A few of these touch common allergens: tree nuts, sesame, soy, and dairy. If you are serving a crowd, label the dish or ask guests, and keep nuts and sesame in a separate small bowl for people to add themselves.

Roasting Mixed Vegetables Together

A tray of mixed vegetables is a weeknight staple, but the pieces will not all finish at the same time unless you plan for it.

Group by cooking time

Start the slowest vegetables first, then add the faster ones. As an example, put potatoes, carrots, and beets in the oven first. After 15 minutes, add broccoli and onions. In the last 10 minutes, add zucchini, tomatoes, or asparagus. This staggered approach gives every vegetable the time it needs without overcooking the delicate ones.

Cut by cooking time

The alternative is to cut slower vegetables smaller and faster ones larger. Small cubes of potato and big chunks of zucchini can finish together. This works best when you do not want to stand by the oven watching a timer.

Two pans, not one

If you roast more than about two pounds (900 g) of vegetables, split them between two pans. Swap the pans between racks halfway through, and rotate them front to back. Ovens have hot spots, and a single pan rarely browns evenly.

Sheet pan meals with meat

If you roast vegetables alongside raw meat, keep food safety in mind. Poultry should reach 165 F (74 C) internally. Ground meat, such as meatballs, should reach 160 F (71 C). Whole cuts of beef, pork, or lamb, and fish, should reach 145 F (63 C). Use an instant-read thermometer in the thickest part. Vegetables that touched raw meat juices should be cooked fully, not set aside to eat raw. Do not use the same spoon or plate for raw meat and finished vegetables, and wash hands and boards between tasks.

Make-Ahead, Storage, and Reheating

Prepping ahead

You can wash, dry, and cut most vegetables a day or two in advance. Store them in airtight containers lined with a paper towel, and keep them refrigerated. Cut potatoes should sit in cold water in the refrigerator, then be dried thoroughly before roasting. Do not oil or salt the vegetables far ahead, since salt draws out water and leaves them wet.

Storing leftovers

Cooked vegetables should be refrigerated within 2 hours of coming out of the oven, or within 1 hour if the room is above 90 F (32 C). Pack them in shallow containers so they cool quickly. Eat leftovers within 3 to 4 days. Cooked vegetables can also be frozen for 8 to 12 months, though texture suffers, and they are best added to soups, grain bowls, or blended dishes afterward rather than eaten as crisp sides.

Reheating without losing crispness

The microwave is fast but makes roasted vegetables soft. For crispness, return them to a 400 F (200 C) oven or an air fryer on a clean sheet for 5 to 10 minutes, or toss them in a hot skillet. Reheat until steaming hot throughout, ideally to 165 F (74 C). Reheat only the portion you plan to eat, and do not reheat the same batch repeatedly.

Using leftovers

Leftover roasted vegetables are useful. Fold them into omelets, stir them into pasta, blend them into soup, spoon them over rice or grains, pile them on flatbread, or chop them into a salad. Day-old roasted carrots and beets are particularly good cold, tossed with a sharp dressing.

Common Mistakes

Crowding the pan

This is the number one cause of soggy results. Vegetables release steam as they cook, and if the pieces touch, the steam gets trapped and the surfaces never dry. Use more pans, leave gaps, and if you can see very little bare metal, there are too many pieces.

Starting with a cold oven or a cool pan

Vegetables put into an oven that is still heating up begin to soften before they brown. Wait for the preheat to finish, and consider putting the empty pan in to heat. The sizzle when the vegetables hit the metal is a good sign.

Cutting unevenly

Mixed sizes mean burnt small pieces and raw large ones. Take a minute to cut consistently, and when in doubt, cut a little larger rather than smaller, since small pieces dry out and char.

Not drying the vegetables

Wet vegetables steam. Dry them thoroughly after washing, and in the case of potatoes, after soaking.

Too little or too much oil

Too little makes them dry and tough; too much makes them oily. Start with a tablespoon or two per pound and adjust to taste next time.

Adding sugar and garlic too early

Honey, maple syrup, minced garlic, and balsamic glaze burn long before the vegetables are done. Add them late.

Stirring constantly

Turning the vegetables every few minutes interrupts browning. Let them sit, turn once or twice, and trust the process.

Pulling them too early

Pale, soft vegetables are usually underdone, not overdone. If the edges have not browned, give them another 5 to 10 minutes. Many people stop cooking at the point where vegetables are just tender, and they miss the best flavor, which comes a few minutes later.

Ignoring your actual oven

If every recipe seems to run too long or too short, your oven may be off. An oven thermometer will tell you.

Troubleshooting

  • Soggy and pale: raise the temperature by 25 F (about 15 C), use a bigger pan, dry the vegetables better, or cut them larger.
  • Burnt outside, raw inside: the pieces are too large or the oven is too hot. Lower to 400 F (200 C), cut smaller, or cover loosely with foil for the first half.
  • Stuck to the pan: use parchment, more oil, or let them brown fully before trying to flip them. Properly browned vegetables release on their own.
  • Bitter taste: burnt garlic or overly charred edges. Trim the burnt bits and add garlic later next time.
  • Bland: add more salt before roasting, and finish with acid and fresh herbs.
  • Greasy: blot on paper towels and reduce oil next time.

Kitchen Safety While Roasting

A 425 F (220 C) oven is hot enough to burn skin in a split second. Use dry, thick oven mitts, since a damp mitt transmits heat quickly. Pull the rack out partway rather than reaching deep into the oven. Keep the pan level when removing it, particularly if there is rendered oil or liquid. Let the pan cool on a heat-safe surface, and keep children and pets away from the stove while it is hot.

Oil that spills onto the oven floor will smoke and can catch fire. If you see flames in the oven, keep the door closed, turn the oven off, and let the fire starve of oxygen. Never throw water on a grease fire. If you cannot control it, leave the house and call 911. Keep a fire extinguisher rated for kitchen use within reach, and check that your smoke detectors work.

When to Call a Professional

Most roasting problems are fixed by technique. A few are not, and they are worth taking seriously.

  • Smell of gas. If you smell gas near a gas oven, do not light anything or flip switches. Open windows, leave the house, and call your gas utility or 911 from outside.
  • Oven that will not hold temperature. If a properly calibrated thermometer shows swings of 50 degrees F or more, or the oven will not heat at all, the thermostat, sensor, or heating element may be failing. Call a qualified appliance technician.
  • Sparks, burning smells without food, or tripped breakers. Stop using the oven and call a licensed electrician or appliance repair professional.
  • Self-cleaning cycle trouble. If the oven locks, smokes heavily, or shows persistent error codes, check the owner’s manual and call for service rather than forcing the door.
  • Food allergies and special diets. If you are cooking for someone with a severe allergy or a medical dietary restriction, check with their doctor or dietitian about ingredients.

Frequently Asked Questions

Should I cover vegetables with foil while roasting?

Generally no. Foil traps steam and prevents browning. The exception is whole beets or very dense squash, which can be wrapped to cook through, or a pan that is browning too quickly, where a loose foil tent for part of the time helps.

Can I roast frozen vegetables?

Yes, and you do not need to thaw them. Spread them on a hot pan in a single layer, use a little extra oil, and roast at 425 to 450 F (220 to 230 C). They release more water than fresh vegetables, so they will be softer and brown less, and they need more space. Frozen broccoli, cauliflower, green beans, and Brussels sprouts work best.

How do I know when vegetables are done?

Look for browned edges and a tender center. A fork or knife should pass through the thickest part easily. Taste a piece if you are unsure. Roasted vegetables are done when they taste good, not at a fixed number on the timer.

Do I need to peel vegetables before roasting?

Not usually. Scrubbed carrots, potatoes, parsnips, and delicata squash can be roasted with the skin on, which adds texture and nutrients. Peel butternut squash, beets (after roasting), and anything with a waxy, dirty, or tough skin. Always wash produce first, even if you plan to peel it.

Why are my vegetables bitter?

Bitterness usually comes from burnt garlic, overly charred edges, or naturally bitter vegetables such as older Brussels sprouts or broccoli. Lower the heat slightly, add garlic late, and finish with a pinch of salt and something acidic or sweet to balance.

Can I roast vegetables ahead for a party?

Yes. Roast them until just tender and nicely browned, cool them quickly, refrigerate within 2 hours, and reheat in a 400 F (200 C) oven just before serving. Alternatively, serve them at room temperature. Do not leave them out for more than 2 hours.

What is the best oil for roasting at high heat?

Refined olive oil, avocado oil, canola, and sunflower oil all tolerate 425 F (220 C) well. Extra virgin olive oil works fine for most home roasting, but it can smoke and taste harsh at the very top of the temperature range.

Can I use parchment paper at 450 F?

Check the package. Some parchment is rated only to about 420 to 450 F (215 to 230 C), and it can brown, turn brittle, or in rare cases ignite if it touches the oven element or hangs over the pan edge. Trim it so it fits inside the pan, or use bare metal at the highest temperatures.

Making It a Habit

The best way to get good at roasting is to do it often, and take small notes. Pay attention to how your oven behaves, which pan you like, and how much salt you need. Try a new vegetable each week, and try one new seasoning on a familiar one. Before long you will stop checking charts and start trusting your eyes and nose: the smell of caramelizing sugar, the sound of sizzling, and the color of the edges tell you more than any timer. Roast a big pan on Sunday, and you will have the start of several meals waiting in the refrigerator.