Porcupine Beef Balls
["2 c. tomato sauce (a jar; add 1/2 c. water)", "1 lb. ground beef", "1/2 c. uncooked rice", "1/4 c. minced onion", "1 tsp. salt", "1/8 tsp. pepper"]
["Lightly grease a 2 1/2-quart casserole.", "Set aside sauce.", "Add 1/2 cup water if sauce is thick.", "Combine beef, rice, onion, salt and pepper.", "Shape into 1 1/2-inch balls and put in casserole. Pour tomato sauce over meatballs.", "Cover and bake at 350\u00b0 for about 1 hour."]
["tomato sauce", "ground beef", "rice", "onion", "salt", "pepper"]