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Sheet pan veggie fajitas with colorful peppers and onions, ready to be served in tortillas.

Spicy Sheet Pan Veggie Fajitas with Black Beans

These spicy sheet pan veggie fajitas with black beans are a quick and easy weeknight meal, packed with flavor and vibrant vegetables. Everything comes together on one pan for minimal cleanup.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings 4 people

Equipment

  • oven
  • baking sheet
  • large bowl
  • parchment paper

Ingredients
  

Fajita Ingredients

  • 3 bell peppers
  • 1 large red onion
  • 2 tablespoons olive oil
  • 2 tablespoons fajita seasoning
  • 1 can (15-ounce) black beans
  • 1 juice of lime
  • ¼ cup fresh cilantro
  • 1-2 jalapeños
  • Corn or flour tortillas warmed, for serving

Optional Toppings

  • avocado slices
  • guacamole
  • salsa
  • sour cream or Greek yogurt
  • shredded cheese
  • hot sauce

Instructions
 

Preparation

  • Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.

Cooking the Fajitas

  • In a large bowl, combine the bell peppers, red onion, and jalapeños (if using), then toss with olive oil and fajita seasoning until evenly coated.
  • Spread the seasoned vegetables and black beans in a single layer on the prepared baking sheet, ensuring they are not overcrowded.
  • Roast for 20-25 minutes, stirring halfway, until the vegetables are tender, slightly charred, and caramelized.

Finishing and Serving

  • Remove from the oven, immediately squeeze fresh lime juice over the hot vegetables, and sprinkle with fresh cilantro.
  • Serve the fajitas hot with warmed tortillas and your preferred toppings.

Notes

For a spicier kick, leave some seeds in the jalapeños or add a pinch of cayenne pepper to the seasoning. Using two baking sheets prevents overcrowding, which is key for nicely charred vegetables.