2 lbs. lean ground beef
1 med. onion, chopped
1/2 c. oatmeal
1/2 tsp. pepper
1/4 tsp. allspice
1/2 tsp. dry mustard
1 1/2 tsp. salt
1 egg, beaten
1 can cream of mushroom soup

Combine all ingredients, except mushroom soup. Shape into balls and brown; drain. Mix mushroom soup with 1/2 can of water. Pour over meatballs and simmer for 30 minutes over low heat.