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A quick, easy, and flavorful method to roast frozen mixed vegetables using garlic-infused olive oil, resulting in crispy, golden edges and tender centers without steaming or mushiness.

  • Total Time: 25-30 minutes
  • Yield: 4 servings 1x

Ingredients

Scale
  • 4 cups (about 600g) frozen mixed vegetables (broccoli, cauliflower, carrots, green beans)
  • 3 tablespoons garlic-infused olive oil (or plain olive oil plus 2 minced garlic cloves)
  • 1 teaspoon sea salt
  • ½ teaspoon freshly ground black pepper
  • ¼ teaspoon red pepper flakes (optional)
  • Zest of ½ lemon (optional)

Instructions

  1. Preheat the oven to 425°F (220°C) and let it heat for 10–15 minutes.
  2. Line a rimmed baking sheet with parchment paper or lightly grease it.
  3. Keep the vegetables frozen; if they look watery, pat them dry with paper towels before seasoning.
  4. In a large bowl, toss 4 cups frozen mixed vegetables with 3 tablespoons garlic-infused olive oil until evenly coated.
  5. Add 1 teaspoon sea salt, ½ teaspoon freshly ground black pepper, and (optional) ¼ teaspoon red pepper flakes; toss to combine.
  6. Spread the vegetables in a single layer on the prepared baking sheet, avoiding overcrowding.
  7. Roast on the middle oven rack for 20 minutes, flipping the vegetables with a spatula or tongs at the 10-minute mark.
  8. Check for golden, crispy edges and tender centers; roast an additional 3–5 minutes if needed to reach desired crispiness.
  9. Once out of the oven, sprinkle the zest of half a lemon over the roasted vegetables (optional).

Notes

Do not thaw vegetables before roasting to avoid sogginess., Garlic-infused olive oil prevents bitter burnt garlic flavor compared to fresh garlic cloves., High heat (425°F/220°C) and space between veggies on the pan ensure crispiness., Flip vegetables halfway through roasting for even browning., Air fryer alternative: 400°F (200°C) for 15–18 minutes with shaking or tossing halfway., Store leftovers in an airtight container in the fridge for up to 3 days; reheat in a 400°F (200°C) oven for 5–7 minutes to restore crispness., This recipe is naturally vegan and gluten-free; check garlic oil additives if store-bought to maintain dietary preferences., Feel free to substitute with other frozen veggies like Brussels sprouts, asparagus, or diced sweet potatoes., Seasoning variations such as smoked paprika, cumin, or curry powder work well., Use a cast iron skillet for even crispier results but watch closely to prevent burning.

  • Author: Ashley
  • Prep Time: 5 minutes
  • Cook Time: 20-25 minutes
  • Category: Side Dish

Nutrition

  • Serving Size: Approximately 1 cup per serving
  • Calories: Approximately 90 kcal per serving
  • Fat: Approximately 4 grams per serving
  • Carbohydrates: Approximately 15 grams per serving
  • Protein: Approximately 3 grams per serving