Don't thaw the vegetables first. Ice crystals and excess water are exactly what makes frozen veg turn to mush in an oven or on a stovetop, and the air fryer's hot moving air handles that moisture better if the vegetables go in frozen and separated, not clumped together.

  1. Preheat the air fryer to 400°F for 3 minutes.
  2. Tip the frozen vegetables straight into the basket. Break up any large frozen clumps with your fingers so pieces sit as loosely as possible.
  3. Drizzle with the olive oil and toss right in the basket, or toss in a bowl first if that's easier, then spread the vegetables into as close to a single layer as the basket allows. A little overlap is fine, but avoid piling them more than 1.5in deep.
  4. Air fryer: 400°F, 13 minutes, shaking the basket at the 6 and 10 minute marks.
  5. Pull the basket, season with salt, pepper, and garlic powder, and shake once more to coat. Taste a piece and check for the crisp-tender texture and browned edges you want; if you'd like more color, run another 2 to 3 minutes.
  6. Serve right away, while the edges are still crisp.

Tips

  • Buy a blend without a heavy sauce or breading. Plain frozen mixed vegetables (carrots, peas, corn, green beans, sometimes lima beans) crisp up far better than anything pre-seasoned in butter sauce, which tends to steam instead of roast.
  • Don't crowd the basket. If your air fryer basket is small, cook in two batches rather than piling vegetables two or three layers deep, or they'll steam on the bottom and stay crisp only on top.
  • Skip the oil if you're watching fat, but expect slightly less browning. A light coat of oil helps the vegetables catch color instead of just drying out.
  • Every air fryer runs a little differently. Check at the 10 minute shake and add time in small increments rather than assuming this exact timing will match your machine.

FAQ

Do I need to thaw the vegetables first? No. Thawing releases water that pools in the basket and steams the vegetables instead of crisping them. Cook them frozen, straight from the bag.

Why did my vegetables come out soggy anyway? Usually it's overcrowding or a blend with a lot of watery vegetables like sliced zucchini or diced tomato mixed in. Stick to a sturdier blend, spread the pieces out, and shake the basket at least twice during cooking.

Can I use a fresh vegetable mix instead? Yes, though fresh vegetables usually cook faster and need a light oil coating to crisp properly since they don't carry the same surface starch as frozen ones. Start checking for doneness a few minutes earlier.

Can I add cheese or breadcrumbs? A light sprinkle of grated cheese in the last 2 minutes of cooking works well and won't burn if you add it near the end rather than at the start.

Is this recipe gluten-free and vegan? As written, yes, as long as your specific frozen vegetable blend has no added sauce or seasoning packet with dairy or gluten in it. Check the bag if you're cooking for someone with an allergy.