Campbell's French Onion Burgers

Form the ground beef into 4 patties. Place the burgers in a large skillet over medium high heat and cook until browned on both sides. Transfer the burgers to a plate. Pour off the grease from the skillet. Add the French onion soup to the skillet and heat to a boil. Return the burgers to the skillet and reduce the heat to low. Cover the skillet and cook the burgers about 5 minutes until cooked through. Place 1 slice cheddar on top of each burger. Recover the skillet and cook the burgers an additional minute until the cheese is melted. Place the burgers on the buns and serve immediately.