preheat oven to 350 degrees. In a large mixing bowl mix all cake ingredients for two minutes on medium speed. Pour into 2 round cake pans or a 9x13 baking pan and bake according to cake mix directions. Cool cakes completely.
While cake is cooking in a medium bowl mix pudding and milk. Chill for 5 minutes. Fold in cool whip and chill until cake is ready for frosting. After cakes are cooled completely frost and refrigerate until time to serve. Keep any leftover cake refrigerated.