1 can beefy mushroom soup
1 lb. ground beef
1/3 c. dry bread crumbs
1 egg, beaten
1/4 c. finely chopped onion
1 1/2 c. sliced mushrooms (optional)

Mix 1/4 c. soup, beef, crumbs, egg and onions; shape into 6 patties. Cook until browned on both sides. Remove from pan, pour off fat. Stir in remaining soup and mushrooms; return patties to pan. Reduce heat to low, cover and simmer for 20 minutes, turning patties occasionally.