GRILL DIRECTIONS: Heat grill. In medium bowl, combine ground beef, 2 tablespoons of the salsa and the taco seasoning mix; mix well. Shape mixture into 4 patties, 1/2 inch thick.
When ready to grill, place patties on gas grill over medium heat or on charcoal grill 4 to 6 inches from medium coals. Cook 11 to 13 minutes or until patties are thoroughly cooked, turning once.
Meanwhile, place buns, cut side down, on grill. Cook 1 to 2 minutes or until buns are lightly toasted. Place 1 slice of cheese on each patty; cook an additional 1 minute or until cheese is melted.
Place patties on bottom halves of buns. Top each with 1 tablespoon salsa and top halves of buns.