Cook LookupCook Lookup
Guide

Vegetable Roasting Guide

Roasting times and temperatures for every vegetable

Roasted vegetables are one of the simplest ways to make anything delicious — high heat caramelizes natural sugars and creates crispy edges that boiling or steaming can't match. The keys are high heat, a single layer, and enough oil. Below is every roastable vegetable in Cook Lookup with exact times and temperatures.

The 5 Rules of Roasting Vegetables

  • Cut pieces to a uniform size so everything finishes at the same time.
  • Use enough oil — 1–2 tablespoons per sheet pan. Toss to coat evenly.
  • Single layer, no overlapping. Crowded vegetables steam instead of roast.
  • Use a hot oven (400–425°F for most vegetables). Lower temps = softer, not crispy.
  • Don't stir too often. Let vegetables sit long enough to develop color on the bottom.

All Vegetables by Roasting Time

Ingredient
Temp Range
Time Range
Broccoli
Toss with oil, salt. Crispy edges are the prize.
375–450°F
16–28 min
Asparagus
Single layer, light oil, high heat.
375–450°F
10–18 min
Brussels Sprouts
Cut side down. Crispy = perfection.
375–450°F
16–30 min
Green Beans
Toss with oil. Get some char.
400–450°F
12–20 min
Carrots
Halve lengthwise for best browning.
375–450°F
22–38 min
Zucchini
Spears, cut side down.
400–450°F
16–25 min
Mushrooms
Toss halfway.
375–425°F
20–28 min
Corn on the Cob
Butter and foil, or naked for char.
375–425°F
18–28 min
Bell Pepper
Strips on sheet pan.
400–450°F
18–26 min
Parsnips
Halve lengthwise. Caramelizes beautifully.
375–450°F
22–38 min
Leeks
Halved lengthwise. Caramelized and sweet.
375–425°F
20–30 min
Fennel
Wedges or thick slices. Cut side down for browning.
375–425°F
26–38 min
Bok Choy
Baby bok choy halved. Cut side down. Sesame oil.
400–450°F
10–16 min
Turnips
Cubed. Toss with oil. Flip halfway.
375–450°F
22–38 min
Snap Peas
Light char. Toss with oil and flaky salt.
400–425°F
8–10 min
Radishes
Halved, cut side down. They mellow out completely.
400–450°F
16–25 min
Celery
Large pieces. Toss with oil. Surprisingly sweet.
400–425°F
20–25 min

Quick Roasting vs Slow Roasting

Tender vegetables (asparagus, zucchini, snap peas) roast quickly at high heat — 10–15 minutes at 425°F. Dense vegetables (potatoes, beets, butternut squash) need longer at moderate heat — 35–50 minutes at 400°F. Cut dense vegetables smaller to speed things up. You can roast fast and slow vegetables on the same sheet pan by adding the fast ones halfway through.