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Beef Fajitas

This recipe delivers classic beef fajitas with seasoned sirloin, bell peppers, and red onion, all quickly seared to perfection. Served in warm whole-wheat tortillas with fresh toppings like cheddar, diced tomatoes, lettuce, and salsa, it's a flavorful and satisfying meal ready in under 30 minutes.
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Total Time 28 minutes
Course lunch/dinner
Cuisine Mexican
Servings 4 people
Calories 1660.8 kcal

Equipment

  • 1 Large Skillet or Cast Iron Pan For searing beef and sautéing vegetables
  • 1 Cutting Board
  • 1 Chef's knife For slicing beef and vegetables
  • 2 Mixing Bowls One for seasoning beef, one for holding prepared vegetables
  • 1 Tongs or Spatula For turning ingredients in the pan

Ingredients
  

Main

  • 1 Tbsp Chili powder
  • 1/2 tsp ground oregano
  • 1/2 tsp paprika
  • 1/4 tsp garlic powder
  • 1/8 tsp salt
  • Ground black pepper to taste
  • 12 ounces beef sirloin select grade, cut into strips 1/2 inch wide and 2 inches long
  • 1 red onion cut into strips
  • 1 bell peppers cut into strips
  • 4 whole-wheat tortillas about 8 inches in. diameter, warmed in the microwave
  • 1/4 cup shredded sharp cheddar cheese
  • 2 medium tomatoes diced
  • 2 cups shredded lettuce
  • 1/2 cup salsa

Instructions
 

  • Combine chili powder, oregano, paprika, garlic powder, salt, and black pepper in a small bowl to create the spice blend.
  • Toss the beef sirloin strips with the spice blend, ensuring the meat is evenly coated.
  • Heat a large skillet over high heat until very hot. Add a small amount of oil if desired (not specified in ingredients, but essential for searing).
  • Add the seasoned beef to the hot skillet and sear quickly for 2-3 minutes per side until browned and cooked to your desired doneness. Remove beef from the pan and set aside.
  • Add the sliced red onion and bell peppers to the same skillet. Sauté for 3-5 minutes, until tender-crisp.
  • Return the cooked beef to the skillet with the vegetables and toss to combine, heating through briefly.
  • Warm the whole-wheat tortillas in the microwave or a dry skillet until pliable.
  • Assemble the fajitas: spoon the beef and vegetable mixture into the warm tortillas.
  • Top with shredded sharp cheddar cheese, diced tomatoes, shredded lettuce, and salsa.
  • Serve immediately and enjoy your homemade beef fajitas.

Notes

For optimal flavor, consider marinating the beef sirloin in the spice blend with a tablespoon of olive oil for at least 30 minutes, or even overnight, to tenderize and infuse flavor. Ensure your skillet is screaming hot before adding the beef to achieve a beautiful sear and a smoky char. Cook the beef in batches if necessary to avoid overcrowding the pan, which can steam the meat instead of searing it. For vegetables, cook them until tender-crisp; they should still have a slight bite. Serve immediately to enjoy the vibrant flavors and textures.