Beef Steak Fajitas Prep: 10 Cook: 10 Original Source Ingredients 1 medium green or red pepper, sliced 1 medium onion, sliced 1/2 lb. beef sirloin steak, cut into thin strips 2 flour tortillas (7 inch) TACO BELL HOME ORIGINALS Thick 'N Chunky Salsa (optional) 1 Tbsp. vegetable oil Instructions Cook and stir green pepper and onion in 1 Tbsp. vegetable oil in large skillet on medium-high heat 5 minutes or until tender-crisp. Add steak strips; cook and stir 3 to 4 minutes or until steak is cooked through. Top tortillas with steak mixture; drizzle with salsa. Roll up.