1 pound flank steak, thinly sliced
1 red bell pepper, sliced
1 yellow bell pepper, sliced
1 green bell pepper, sliced
1 large onion, sliced
2 tablespoons olive oil
1 tablespoon chili powder
1 teaspoon cumin
1 teaspoon garlic powder
1 teaspoon onion powder
½ teaspoon paprika
½ teaspoon salt
¼ teaspoon black pepper
Juice of 1 lime
Warm tortillas, for serving
Instructions
Preheat and Prep: Preheat oven to 400°F (200°C). In a large mixing bowl, combine the sliced flank steak, bell peppers, and onion.
Season: Drizzle olive oil over the steak and vegetables, tossing to coat evenly. In a small bowl, mix chili powder, cumin, garlic powder, onion powder, paprika, salt, and black pepper. Sprinkle this seasoning mixture over the steak and vegetables, tossing again to coat thoroughly.
Roast: Spread the mixture evenly on a large sheet pan. Roast in the oven for 20-25 minutes, stirring halfway through, until the steak is cooked to your desired doneness and the vegetables are tender.
Finish and Serve: Remove from the oven and drizzle with fresh lime juice. Serve immediately with warm tortillas and your favorite fajita toppings such as sour cream, guacamole, or salsa.
Troubleshooting & Consistency Tips
Slice the steak thinly against the grain for maximum tenderness.
Don’t overcrowd the pan—spread the ingredients evenly for proper roasting.
For spicier fajitas, add a pinch of cayenne pepper or red pepper flakes to the spice mix.
Use a meat thermometer to ensure the beef reaches an internal temperature of 145°F (63°C) for medium-rare.
Storage & Make-Ahead
Store leftovers in an airtight container in the refrigerator for up to 3 days.
Reheat in a skillet over medium heat or in the oven at 350°F (175°C) until warmed through.
You can also prepare the seasoning and slice the vegetables ahead of time for quicker meal assembly.
Why This Recipe Works
By cooking everything on one sheet pan, the beef and vegetables roast together, allowing the flavors to meld beautifully while minimizing cleanup.
The spice blend is balanced with smoky paprika and tangy lime juice, giving the fajitas a vibrant and authentic taste.
This method is simple yet ensures perfectly cooked, flavorful fajitas every time.
Expert Tips
Warm your tortillas in the oven or on a skillet before serving for extra flavor and flexibility.
Add sliced mushrooms or zucchini for a vegetable boost.
Marinate the beef in lime juice and spices for 30 minutes before cooking for enhanced flavor.
Serve with Mexican rice and beans for a complete meal.
This Sheet Pan Beef Fajitas recipe is proudly shared by tinsuf.
It’s a perfect blend of simplicity, bold flavors, and quick cleanup, making it a weeknight dinner favorite.
