If you enjoy the bold and spicy flavor of chipotle peppers, this recipe is for you! Steak is marinated in chipotle salsa then thrown on the grill.
Combine salsa, lime peel and juice, and cumin in small bowl. Place beef Steak in food-safe plastic bag. Pour 3/4 cup salsa marinade over steak; turn steak to coat. Close bag securely and marinate in refrigerator 6 hours or overnight. Cover and reserve remaining marinade in refrigerator for sauce.
Remove steak from marinade; discard marinade. Place steak on grid over medium, ash-covered coals. Grill 3/4-inch thick steak, covered, 10 to 11 minutes (over medium heat on preheated gas grill, times remain the same) for medium rare (145°F) doneness, turning occasionally. (Do not overcook). Place 1-inch steak on grid over medium, ash-covered coals. Grill, covered, 12 to 14 minutes (over medium heat on preheated gas grill, 16 to 19 minutes) for medium rare (145°F) doneness, turning occasionally. (Do not overcook.)
Meanwhile stir 3 tablespoons cilantro into reserved marinade. Carve steak into thin slices. Serve with sauce and tortillas, if desired. Garnish with cilantro, if desired.