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Sheet Pan Steak Fajitas Recipe

4.7 from 84 reviews

This Sheet Pan Steak Fajitas recipe offers a quick and flavorful way to enjoy classic fajitas with minimal cleanup. Featuring tender flank steak marinated in a zesty lime and fajita seasoning blend, paired with vibrant bell peppers and onions, all roasted together on a single sheet pan for a convenient and delicious meal. Serve with warm tortillas, fresh cilantro, lime wedges, and optional creamy avocado for a satisfying Tex-Mex feast.

Ingredients

Scale

Steak and Marinade

  • 1 pound flank steak, sliced into ½ inch strips
  • 1 tablespoon lime juice
  • 2 tablespoons olive oil (from the ¼ cup divided)
  • 1 ½ tablespoons fajita seasoning (from the 3 tablespoons divided)

Vegetables

  • 1 yellow onion, sliced into ½ inch strips
  • 1 red bell pepper, sliced into ½ inch strips
  • 1 green bell pepper, sliced into ½ inch strips
  • 1 yellow bell pepper, sliced into ½ inch strips
  • 2 tablespoons olive oil (remaining from the ¼ cup divided)
  • 1 ½ tablespoons fajita seasoning (remaining from the 3 tablespoons divided)
  • Salt and pepper to taste

To Serve

  • Small flour or corn tortillas
  • Limes, sliced
  • Cilantro, chopped
  • Avocado, sliced (optional)

Instructions

  1. Prep the Oven and Steak: Preheat your oven to 400 degrees Fahrenheit. Line a baking sheet with foil for easy cleanup. Slice the flank steak into ½-inch strips to ensure quick and even cooking.
  2. Make the Marinade: In a bowl, whisk together 2 tablespoons of olive oil, 1 ½ tablespoons of fajita seasoning, and 1 tablespoon lime juice. This marinade will infuse the steak with bright, savory flavors.
  3. Marinate the Steak: Place the sliced steak into a resealable bag and pour the marinade over it. Seal and massage gently to coat all pieces. Let it rest while you prep the vegetables to deepen the flavor.
  4. Prepare the Vegetables: Slice the yellow onion and all three bell peppers into ½-inch strips. Combine them in a large bowl and toss with the remaining 2 tablespoons olive oil, 1 ½ tablespoons fajita seasoning, and salt and pepper to taste.
  5. Arrange on Sheet Pan: Spread the seasoned vegetables out evenly on the foil-lined baking sheet, leaving enough space to lay the marinated steak strips alongside them without overcrowding.
  6. Bake the Fajitas: Place the sheet pan in the oven and bake for 12 to 15 minutes. Halfway through cooking, toss the steak and vegetables to promote even roasting and browning.
  7. Prepare Tortillas and Toppings: While the fajita mix is roasting, lightly toast the small flour or corn tortillas to warm them. Slice the limes and chop fresh cilantro for garnishing.
  8. Serve: Once the steak is cooked through and the vegetables have softened and slightly caramelized, remove the pan from the oven. Let it cool for a few minutes before serving. Assemble fajitas by spooning the steak and vegetable mixture into tortillas and topping with cilantro, lime juice, and optional avocado slices.

Notes

  • Flank steak is ideal for fajitas due to its texture and flavor, but skirt or sirloin steak are also great alternatives.
  • Adjust fajita seasoning quantity to taste or use a homemade blend for a personalized spice level.
  • If you prefer spicier fajitas, add sliced jalapeños to the vegetables before roasting.
  • Flour or corn tortillas both work well—choose based on dietary preference or availability.
  • To make this recipe gluten-free, opt for corn tortillas and ensure your fajita seasoning does not contain gluten additives.
  • Leftovers can be refrigerated for up to 3 days and reheated in a skillet for best texture.

Keywords: sheet pan fajitas, steak fajitas, easy fajitas recipe, one pan fajitas, Mexican dinner, flank steak fajitas