Rippled Cake
["1 yellow cake mix", "1 (3 oz.) box gelatin (any flavor)", "1 (3 oz.) box instant vanilla pudding", "1 small container whipped topping"]
["Bake cake according to directions in a 9 x 13-inch pan.", "Jab holes in cake with large fork over entire top of cake.", "Prepare gelatin according to directions and pour over top of cake.", "Chill cake for 1 1/2 hours."]
["yellow cake", "gelatin", "vanilla pudding", "topping"]