Soak bread crumbs in milk 5 minutes. Add onion, meat, seasonings and egg, and blend well with hands. Form small balls with floured hands and saute in small amount of butter or margarine, just enough to keep meat from sticking to pan. Dilute condensed mushroom soup with same amount of milk, in saucepan. Stir over low heat until blended and hot, but not boiling. When meat is well browned on all sides cover with hot mushroom soup. Cover and let simmer over low heat for 5 minutes. Yield: 20-25 small balls.