Porcupine Meatballs
["1 (10 3/4 oz.) can condensed tomato soup", "1 lb. ground beef", "1 c. precooked rice", "1 egg, slightly beaten", "1/4 c. chopped onion", "1 tsp. salt", "2 Tbsp. shortening", "1/2 soup can water", "1 tsp. prepared mustard"]
["Mix 1/4 cup soup with beef, rice, egg, onion and salt.", "Shape into 16 meatballs.", "Brown meatballs in shortening.", "Pour off fat. Blend remaining soup, water and mustard.", "Pour over meatballs. Cover and simmer for 20 minutes.", "Makes 4 servings."]
["tomato soup", "ground beef", "rice", "egg", "onion", "salt", "shortening", "water", "mustard"]