1 lb. ground beef
1/2 lb. elbow macaroni, cooked
1 med. onion, chopped
2 cans tomato soup
2 tbsp. butter
1/2 can water

Brown ground beef. Pour off excess fat. Add onion and cook 2 minutes, stirring constantly. Add soup and water. Simmer 10 minutes. Cook noodles per package directions. Drain and add butter to noodles. Combine with beef mixture.