Mix beef, 1 cup Crispy Fried Onions, Worcestershire and garlic powder. Shape into 6 burgers.
Grill burgers about 10 min. until cooked through in center.
Top each with 1 slice cheese. Cook 1 min. until cheese melts.
Serve burgers on rolls with lettuce and tomatoes, if desired. Top each burger with remaining Crispy Fried Onions.