Pasta Shells
["1 box giant shells", "1 lb. shredded Mozzarella cheese", "8 oz. Ricotta cheese", "1 egg", "1 (32 oz.) Prego", "1 lb. ground beef"]
["Brown meat and drain; add Prego.", "Simmer.", "Cook shells; while boiling, prepare stuffing."]
["giant shells", "Mozzarella cheese", "Ricotta cheese", "egg", "ground beef"]