These Sheet Pan Beef Fajitas are the ultimate weeknight dinner—quick, flavorful, and easy to clean up! Tender, juicy slices of flank steak are roasted alongside colorful bell peppers and onions, all coated in a smoky, zesty spice blend. With just one pan and under 30 minutes in the oven, you’ll have a Tex-Mex feast ready to serve.
Pair them with warm tortillas, fresh lime, and your favorite toppings for a dinner the whole family will love.
🛒 Ingredients
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1 pound flank steak, thinly sliced
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1 red bell pepper, sliced
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1 yellow bell pepper, sliced
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1 green bell pepper, sliced
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1 large onion, sliced
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2 tablespoons olive oil
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1 tablespoon chili powder
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1 teaspoon cumin
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1 teaspoon garlic powder
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1 teaspoon onion powder
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½ teaspoon paprika
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½ teaspoon salt
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¼ teaspoon black pepper
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Juice of 1 lime
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Warm tortillas, for serving
👩🍳 Instructions
Step 1: Prep & Preheat
Preheat oven to 400°F (200°C). In a large bowl, combine sliced flank steak, bell peppers, and onion.
Step 2: Season
Drizzle with olive oil and toss well. In a small bowl, mix together chili powder, cumin, garlic powder, onion powder, paprika, salt, and black pepper. Sprinkle over the steak and veggies, tossing again to coat evenly.
Step 3: Roast
Spread the mixture evenly onto a large sheet pan. Roast for 20–25 minutes, or until the steak is cooked to your preference and the vegetables are tender.
Step 4: Finish & Serve
Remove from oven, drizzle with fresh lime juice, and serve hot in warm tortillas with your favorite toppings.
🌟 Tips & Toppings
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Toppings: Add guacamole, sour cream, pico de gallo, or shredded cheese.
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Make-Ahead: Slice the steak and veggies the night before to save time.
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Spice Level: Kick it up with cayenne or jalapeños if you like it hot.
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Protein Swap: Try chicken, shrimp, or even portobello mushrooms for variety.