Italian Stuffed Shells
["24 jumbo macaroni shells, cooked and drained", "3 beef bouillon cubes", "2 c. boiling water", "1 lb. ground beef", "2/3 c. chopped onion", "1 clove garlic, chopped", "1 (12 oz.) tomato paste", "1 1/2 tsp. oregano leaves", "1 tsp. sugar", "1 (15 oz.) Ricotta cheese", "1 c. Mozzarella cheese", "1/2 c. Parmesan cheese", "1 egg"]
["Dissolve bouillon cubes in 2 cups boiling water and set aside. In a large skillet, brown the ground beef, onion and garlic.", "Stir in the tomato paste, oregano leaves and the bouillon liquid with 1 teaspoon sugar and simmer about 20 minutes."]
["macaroni", "boiling water", "ground beef", "onion", "clove garlic", "tomato paste", "oregano", "sugar", "Ricotta cheese", "Mozzarella cheese", "Parmesan cheese", "egg"]