1 lb. ground beef
1/3 c. bread crumbs
1/2 tsp. salt
1/4 tsp. pepper
1 egg
1 lg. onion, sliced and separated into rings
1 can (10 1/2 oz.) condensed beef broth
1 can (4 oz.) mushrooms, drained
2 tbsp. cold water
2 tsp. cornstarch

Mix ground beef, bread crumbs, salt and pepper and egg. Shape into 4 patties. Brown in skillet, turning occasionally, about 10 minutes, drain. Add onion, broth and mushrooms. Heat to boiling, reduce heat. Cover and simmer about 10 minutes.

Remove patties and keep warm. Heat onion mixture to boiling. Mix water and cornstarch. Stir into onion mixture. Boil and stir 1 minute. Serve over patties.