Potato Casserole
["1 (8 oz.) pkg. Philadelphia cream cheese, softened", "4 c. hot mashed potatoes", "1 egg, beaten", "1/2 c. chopped onion (optional)", "salt and pepper to taste"]
["Blend cream cheese into hot mashed potatoes.", "Add egg, chopped onion, salt and pepper.", "Bake in a 1 1/2-quart casserole dish at 350\u00b0 for 45 minutes.", "Serve at once."]
["Philadelphia cream cheese", "hot mashed potatoes", "egg", "onion", "salt"]