Lg. shells, 12 to 14
1 pkg. shredded cheddar cheese
5 c. Mozzarella cheese
1 (8 oz.) Philadelphia cream cheese
1 lg. jar Prego spaghetti sauce

Cook shells and set aside. Mix cheddar cheese and 2 cups Mozzarella cheese and cream cheese, spoon into large shells and place in 9 x 13 inch baking pan. Pour spaghetti sauce over this. Sprinkle with remaining Mozzarella cheese and bake at 400 degrees for 30 minutes. Serve with garlic bread and salad. OPTIONAL: Can also add 1 pound ground beef to spaghetti sauce.