How to Make Surprise Cheeseburgers
For hamburgers, combine all ingredients thoroughly. Shape to form 12 thin patties. For filling, combine all ingredients thoroughly. Spread filling on center of 6 of the patties. Cover with remaining patties; pinch edges together to seal. Place in broiler about 4 inches from source of heat. Cook about 7 minutes. Turn and cook about 5 minutes longer. Serve on toasted hamburger buns.