1 pkg. brown gravy mix
1 can drained mushrooms
1 1/2 lb. ground beef
1 small onion, chopped
sliced Mozzarella cheese

Mix ground beef and onions and make patties; cook your favorite way at your desired doneness.

Make packet of gravy mix according to package directions, but cook a little thicker than gravy and add the mushrooms.

Place burger onto slice of bread. Top burger with mushroom gravy and then top with sliced cheese and bread.