How to Roast Vegetables

Roasting vegetables in a very hot oven gives them a caramelized exterior and flavor while keeping the inside moist and tender. This showy cooking method easily feeds a crowd or just a couple, and it lets you choose the vegetables.



How to Roast Vegetables

Choosing Your Vegetables

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Some vegetables especially benefit from roasting, such as onions, potatoes, carrots, and other hearty root vegetables, but most vegetables will work. Green beans, broccoli, and other green-hue vegetables are less suited for roasting because they tend to turn olive green, and green beans shrivel before becoming tender. A real benefit to roasting is the ability to cook a combination of colorful vegetables, resulting in a full-flavor side dish or meatless entree. Use this chart of favorite roasting vegetables as a guide.

Roasting Pointers

  • Preheat the oven to 450°F. Roasting vegetables should be done at high heat so they caramelize on the outside. If the oven is too low, the vegetables will overcook before achieving the desired browning.
  • A heavy 13x9x2-inch roasting pan works well for roasting vegetables, but you can also use a large baking pan. To keep cleanup to a minimum, you can line the pan with foil. Place the vegetables that take the longest to cook in the pan. Do not crowd the vegetables or they will steam instead of roast. If you like, add 1 or 2 heads garlic with the tops trimmed off, several sprigs of thyme, and/or snipped fresh rosemary, oregano, or sage.
  • Tossing the vegetables with a seasoned oil mixture keeps them from drying out and helps to flavor the vegetables. In a small bowl combine olive oil with lemon juice, salt, and ground black pepper. Drizzle the seasoned oil over the vegetables in the pan and toss lightly to coat all of the vegetables. A basting brush also works well to help coat the vegetables with the oil.

Tip: If you prefer, you can omit the heads of garlic and fresh herbs from the vegetable mixture in the pan and add minced garlic and snipped fresh herbs or dried herbs (1 tablespoon snipped fresh herb equals 1 teaspoon dried herb) to the oil mixture.

  • Roast the vegetables, uncovered, about 30 minutes, stirring once. Remove the pan from the oven and add vegetables with shorter cooking times. Toss to combine and return to the oven. Continue to cook about 10 to 15 minutes more or until the vegetables are tender and brown on the edges, stirring occasionally. The timings here are approximate and will depend on the vegetables you choose.
Vegetables for Roasting Preparation Approximate Roasting Times at 450 degrees F. Roast vegetables until crisp-tender.
Carrots Trim and peel or scrub baby carrots or regular carrots. Cut regular carrots into bite-size pieces or julienne strips. 40 to 45 minutes (julienne strips may cook faster)
Parsnips Trim and peel parsnips. Cut into bite-size pieces or julienne strips. 40 to 45 minutes (julienne strips may cook faster)
New potatoes or regular potatoes Whole tiny new potatoes, quartered, work especially well. For large potatoes, cut into bite-size pieces. Peeling is not necessary, but scrub well before using. 40 to 45 minutes
Sweet potatoes Scrub and peel. Cut into bite-size pieces. 40 to 45 minutes
Onions Remove papery outer layer. Cut into fairly thin wedges. 30 to 45 minutes
Fennel Trim the stalks and cut a thin slice from the bottom of the bulb. Cut bulb into fairly thin wedges. 30 to 40 minutes
Brussels sprouts Trim stems and remove any wilted outer leaves; wash. Cut any large sprouts in half lengthwise. 30 to 40 minutes
Baby beets or regular beets Scrub and peel beets. Trim off stem and root ends. If desired, halve or quarter baby beets. Cut regular beets into 1-inch pieces. 30 to 40 minutes (you may want to cover the beets if they start to burn).
Roma tomatoes Wash and halve lengthwise. 20 to 30 minutes
Zucchini, pattypan, or yellow summer squash Baby zucchini, pattypan, or summer squash can be roasted whole. For larger squash, cut into bite-size pieces or slices. 10 to 15 minutes
Small eggplant Peel if desired. Cut into quarters lengthwise, and cut into 1/2-inch-thick slices. 10 to 15 minutes
Sweet peppers, regular size or small For regular-size peppers, wash, seed, and cut into 1/2-inch-wide strips. For small peppers, if desired, roast whole, then remove stems and seeds. 10 to 15 minutes
Asparagus Wash and break off woody bases where spears snap easily. Leave spears whole or cut into 1-inch pieces. 10 to 15 minutes
Baby leeks Trim and halve lengthwise. Rinse well and pat dry with paper towels. 10 to 15 minutes
Cauliflower Wash and remove leaves and woody stem. Break into florets. 10 to 15 minutes
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