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Easy Sheet Pan Fajita Steak Recipe with Peppers and Onions

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A quick and easy sheet pan fajita steak recipe with peppers and onions that delivers bold flavor and satisfying texture, perfect for busy weeknights or casual dinners.

Ingredients

Scale
  • 1 pound flank steak or skirt steak
  • 3 medium bell peppers (red, yellow, green)
  • 1 large yellow onion
  • 2 tablespoons extra virgin olive oil
  • 2 tablespoons fajita seasoning (chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, black pepper)
  • 1 tablespoon fresh lime juice
  • 2 garlic cloves, minced
  • 2 tablespoons fresh cilantro, chopped (optional)
  • Salt and black pepper to taste
  • Flour or corn tortillas for serving

Instructions

  1. Preheat your oven to 425°F (220°C).
  2. Slice the steak against the grain into ¼-inch thick strips, trimming excess fat.
  3. Core and seed the bell peppers, then slice into ½-inch strips. Peel and slice the onion into similar-sized strips.
  4. Combine fajita seasoning, minced garlic, olive oil, salt, and pepper in a large bowl.
  5. Add the sliced steak, peppers, and onions to the bowl and toss well to coat evenly.
  6. Spread everything out in a single layer on a rimmed baking sheet, avoiding overcrowding.
  7. Roast in the oven for 12-15 minutes, flipping the steak and stirring the veggies halfway through (around 7 minutes).
  8. Check doneness: steak should be medium-rare (about 135°F/57°C) and veggies tender with slightly charred edges.
  9. Remove from oven, squeeze fresh lime juice over the top, and sprinkle with chopped cilantro.
  10. Serve immediately with warmed tortillas and optional lime wedges.

Notes

Keep an eye on the steak to avoid overcooking; slice steak thinly against the grain for tenderness. Pat steak dry before seasoning for better sear. For more char, broil for last 2 minutes but watch closely. Use corn tortillas for gluten-free option. Leftovers keep well refrigerated for 3 days or frozen for up to 2 months.

Nutrition

Keywords: sheet pan fajita, steak fajitas, quick dinner, easy fajita recipe, peppers and onions, weeknight meal