1 box yellow cake mix
2 lg. cans crushed pineapple
1 med. Cool Whip
1 lg. box instant vanilla pudding (can use 2 sm. boxes)

Bake cake as directed on box. Let cool completely. Use handled end of wooden spoon and punch holes in cake. Pour one can of crushed pineapple with juice over cake.

Mix other can of pineapple, Cool Whip, and vanilla pudding. Spread over cake and refrigerate overnight.