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Sheet pan steak fajitas with colorful peppers and onions ready to serve

Sheet Pan Steak Fajitas

This Sheet Pan Steak Fajitas recipe combines juicy steak, colorful bell peppers, and sweet onions for a quick and satisfying meal, all cooked on a single pan for easy cleanup.
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Course Dinner, Main Course
Cuisine Mexican
Servings 4 servings
Calories 450 kcal

Ingredients
  

Main Ingredients

  • 1 lb steak (flank or sirloin) Provides rich flavor and tender texture. You can use any cut you prefer!
  • 2 pieces bell peppers (sliced, any color) Adds sweetness and crunch; feel free to mix colors for a vibrant dish.
  • 1 piece onion (sliced) Brings a slightly sweet flavor that caramelizes beautifully in the oven.
  • 2 tablespoons olive oil Helps everything roast nicely and adds a touch of richness.
  • 1 tablespoon fajita seasoning The secret to achieving that classic, zesty flavor!
  • to taste salt and pepper Enhances all the other flavors in the dish.
  • as needed pieces tortillas (for serving) Warm them up for a perfect wrap!

Optional Toppings

  • sour cream Adds a cool contrast to the spices.
  • guacamole Creamy and rich, it's a perfect complement.
  • salsa Fresh and zesty, it brightens up every bite.

Instructions
 

Preparation

  • Preheat your oven to 400°F (200°C) so it's nice and hot when you're ready to cook.
  • Slice the steak against the grain into thin strips to keep it tender when cooked.
  • Chop the bell peppers and onion into thin slices, ensuring even cooking.
  • In a large bowl, combine steak, peppers, onion, olive oil, fajita seasoning, salt, and pepper. Toss until everything is well coated.

Cooking

  • Spread the seasoned mixture evenly on a large baking sheet.
  • Bake in the preheated oven for about 15-20 minutes, stirring halfway through for even cooking.
  • Look for a nice char on the steak and slight softness in the veggies; they should be tender but still crisp.

Serving

  • Warm up your tortillas in the microwave or a dry skillet.
  • Once the fajitas are done, remove them from the oven and let them cool for a minute.
  • Serve the fajita mixture on warm tortillas, topped with optional sour cream, guacamole, or salsa if desired.
  • Fold them up and enjoy a delicious, hassle-free meal!

Notes

For the best results, slice the steak against the grain and avoid overcooking the vegetables. You can also swap proteins or use gluten-free options for variations.
Keyword Easy Meal, Fajitas, Quick Dinner, Sheet Pan, Steak