Roasted Vegetables Recipe in an Air Fryer Oven: Simple

This roasted vegetables recipe in an air fryer oven combines potatoes, carrots, broccoli, bell pepper, red onion, and zucchini with olive oil and savory seasoning. The circulating heat browns the edges quickly, while cutting the vegetables to suit their different cooking times helps everything become tender without turning soft.

Ingredients

3 cups (450 g) baby potatoes, halved or quartered so the pieces are about 1 inch (2.5 cm)
1 1/2 cups (200 g) carrots, peeled if desired and sliced into 1/4-inch (6 mm) rounds
1 1/2 cups (150 g) red onion, cut into chunky wedges
1 1/2 cups (150 g) red bell pepper, seeded and cut into 1-inch (2.5 cm) pieces
2 cups (200 g) zucchini, cut into 1/2-inch (1.25 cm) half-moons
2 cups (180 g) broccoli florets, cut into bite-size pieces
2 tablespoons (30 ml) olive oil
1 teaspoon (3 g) garlic powder
1 teaspoon (2 g) smoked or sweet paprika
1 teaspoon (1 g) dried oregano
3/4 teaspoon (4 g) fine salt
1/4 teaspoon (0.5 g) black pepper
1 tablespoon (15 ml) lemon juice, optional, for finishing
2 tablespoons (8 g) chopped fresh parsley, optional, for serving

Instructions

Cut and dry the vegetables. Prepare the vegetables as listed, keeping the potato pieces small and the carrots thin so they cook at a similar pace to the softer vegetables. Pat the cut vegetables dry with a clean towel, especially the zucchini and broccoli. Surface moisture can make them steam instead of brown. If your air fryer oven has two racks, divide the vegetables between them rather than piling them on one tray.
Season evenly. Put all the vegetables in a large bowl. Add the olive oil, garlic powder, paprika, oregano, salt, and pepper. Toss thoroughly, lifting the vegetables from the bottom so the oil and seasoning coat the cut surfaces. The coating should be light rather than oily; if seasoning collects at the bottom of the bowl, toss once more before transferring the vegetables.
Preheat the oven. Set the air fryer oven to its air-fry setting at 400°F (200°C) and preheat for 3 minutes. If your model does not have a preheat function, run it empty at the same temperature for about 3 minutes. Arrange the racks or trays in the positions recommended by the appliance instructions, and use perforated air-fryer trays when available so hot air can move around the vegetables.
Arrange in a single layer. Spread the vegetables across the trays with a little space between pieces. Keep the potatoes and carrots toward the more open parts of the tray and avoid stacking the broccoli or zucchini. If all the vegetables do not fit without crowding, cook in two batches; a crowded tray traps moisture and produces softer vegetables.
Air-fry, then turn the trays. Cook for 21 minutes total. At the 11-minute mark, pull out the trays carefully, shake or turn the vegetables, and swap the upper and lower trays if your oven has more than one rack. Return them to the oven for the remaining 10 minutes. Check that the potatoes and carrots are fork-tender and that several pieces have browned edges. If they need more color or tenderness, cook in 2-minute increments; appliance strength and the size of the cuts can change the finish time.
Finish and serve. Transfer the vegetables to a serving bowl. Add the lemon juice and parsley, if using, and toss gently. Taste and adjust the salt or pepper while the vegetables are hot. Serve right away for the crispest edges.

Tips

Keep the pieces consistent. Uniform size matters more than perfect shapes. Cut firm vegetables such as potatoes and carrots smaller or thinner than zucchini and bell pepper, which soften faster. If you prefer larger potato chunks, start them in the oven for 6 to 8 minutes before adding the quicker-cooking vegetables.
Use space, not extra oil, for browning. Air needs room to circulate around the pieces. If your oven is small, two uncrowded batches usually brown better than one full, piled tray. You do not need to add more oil just because the vegetables are not browning in a crowded load.
Adjust for your appliance. Air fryer ovens vary in fan strength, tray design, and how hot each rack gets. Begin checking near the end of the stated cook time, and rotate the trays if one side browns faster. If your oven runs hot, reduce the setting to 390°F (200°C) and check a few minutes earlier.
Swap what you have. Cauliflower, Brussels sprouts, or parsnips can replace similar amounts of broccoli, zucchini, or carrots. Cut dense vegetables small enough to cook through. Fresh garlic can be used in place of garlic powder, but add it during the final 5 minutes because minced garlic can burn under strong circulating heat.

Serving Suggestions

Serve the vegetables hot as a side for roasted chicken, grilled fish, baked tofu, or a simple bean dish. Their mix of tender centers and browned edges also works well spooned over rice, couscous, or quinoa. For a more filling vegetarian plate, add warm chickpeas and a dollop of plain yogurt or hummus. If serving the vegetables alongside a saucy main, keep the lemon finish light so the flavors do not compete.

For a casual meal, pile them into warm pita or flatbread with greens and a spoonful of tahini sauce. You can also fold leftovers into a grain bowl with leafy greens, a fried egg, or crumbled feta. Add those toppings after cooking rather than placing them on the air-fryer tray. The vegetables are especially useful for meal prep when kept separate from dressings and sauces, which can soften their browned surfaces.

Variations

Italian-style: Use dried basil in place of oregano and finish with finely grated Parmesan. Add the cheese after cooking so it stays flavorful rather than scorching. A little balsamic vinegar can replace the lemon juice for a sweeter, tangier finish.

Smoky and spicy: Keep the paprika and add 1/4 teaspoon (0.5 g) cayenne or chili flakes to the oil and spice mixture. Start with less if you are serving people who prefer mild food. A squeeze of lime can work instead of lemon and gives the vegetables a brighter finish.

Root-vegetable mix: Replace the zucchini and pepper with more carrots, parsnips, or cubed sweet potato. These firm vegetables may need a few extra minutes, so cut them into pieces no larger than the potatoes and check for tenderness before serving. Avoid using very small pieces of onion in this version, as they can darken before the roots are done.

Different seasoning: For a warm, earthy profile, use ground cumin instead of oregano and finish with chopped cilantro. For a simpler flavor, season with salt, pepper, and garlic alone, then add lemon and herbs at the table. Keep the total amount of dry seasoning close to the recipe so the coating remains balanced.

Storage and Reheating

Let leftovers cool briefly, then refrigerate them in a covered, shallow container within 2 hours of cooking. They keep for 3 to 4 days in the refrigerator. For the best texture, store any sauce, fresh herbs, or extra lemon separately and add them after reheating. The vegetables will soften somewhat in storage, particularly zucchini and broccoli, but they remain useful in grain bowls, wraps, omelets, and soups.

To reheat, spread a portion in a single layer in the air fryer oven and heat at 375°F (190°C) for about 4 to 7 minutes, shaking or turning once, until hot throughout. A microwave is convenient for a quick portion, though it will make the vegetables softer; heat in short intervals and stir between them. USDA guidance is to reheat leftovers to 165°F (74°C); check with a food thermometer if you need to verify the temperature. You can freeze the cooked vegetables for up to 2 months for best quality, though thawed zucchini and broccoli are likely to be softer. Reheat them from frozen in a hot oven or air fryer rather than expecting their original texture.

Frequently Asked Questions

Do I need to preheat an air fryer oven for vegetables?

Preheating for a few minutes helps the vegetables start browning as soon as they go in, and it makes the cooking time more consistent. If your model specifically says not to preheat, follow its instructions and begin checking the vegetables a little later. Either way, avoid putting cold vegetables on a crowded tray and expecting them to brown evenly.

Can I cook all the vegetables together?

Yes, if they are cut to suit their cooking speeds and spread in a single layer. This recipe uses smaller potatoes and thin carrots alongside quicker-cooking zucchini, pepper, and broccoli. If you want larger potato pieces or especially crisp broccoli, cook the potatoes and carrots first for 6 to 8 minutes, then add the remaining vegetables and continue until everything is tender.

Why did my vegetables turn soft instead of crisp?

The most common causes are overcrowding, wet vegetables, and pieces that are too small. Moisture has nowhere to escape when the tray is packed, so the vegetables soften instead of browning. Dry them before seasoning, leave gaps between pieces, and cook in batches if needed. Also remember that zucchini naturally becomes tender more quickly than potatoes, so avoid slicing it too thin.

Can I use frozen vegetables?

Frozen vegetables can be air-fried, but they release more moisture and may not brown as evenly as fresh ones. Cook them straight from frozen without thawing, work in a small batch, and expect to add several minutes while checking for tenderness. For this particular mixed recipe, fresh potatoes and carrots give the most predictable results; frozen broccoli can be used, but dry off any excess ice crystals and add it later in the cooking time.

Can I make this recipe without oil?

Yes. You can omit the olive oil, though the spices may cling less well and the vegetables will generally have less browned, crisp edges. Toss the dry vegetables directly with the seasonings and spread them out with plenty of space. A light spray of oil is another option if you want some browning without using the full amount; avoid spraying oil directly into an appliance unless its manual allows it.

How do I know when the vegetables are done?

Test a potato and a carrot with the tip of a knife or fork: it should slide in without much resistance, while the outside should show some browned spots. Broccoli should be tender with browned tips, and zucchini should be soft but still hold its shape. If the softer vegetables finish first, remove them and return the firmer pieces to the oven for a few more minutes.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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