Refreshing Lemon Cake

1 box lemon cake (I used Betty Crocker brand, seemed to keep moist)
1 3.4 oz box instant vanilla pudding
1 8oz cool whip, thawed

Mix lemon box cake per direction, and let completely cool.
Mix instant vanilla pudding per direction and let set in fridge for 5 minutes; spread over cooled lemon cake, spread cool whip over top and enjoy!! Refreshing and ooh so good!