Preheat oven to 350 degrees. Bake rolls according to directions on package. Prepare grill to high heat. Make 8 three inch beef patties, salt and pepper to taste.
Grill beef patties 5 minutes per side, or until well done. Place a slice of cheese on each patty during the last minute of grilling. Arrange bottoms of rolls on plate. Place a patty on each roll and add onion slices. Cover with tops of rolls.
