1 box yellow cake mix
1 (17 oz.) can sweetened crushed pineapple
1 can Thank You brand already prepared vanilla pudding
1 (16 oz.) tub Cool Whip

Bake cake mix according to directions on box in a 9x13 inch pan. After cake has cooled, spoon pineapple on top. Spread pudding on top of pineapple, then carefully spread thawed Cool Whip to cover top of cake. Refrigerate 1 hour before eating.