Preheat oven to 350 degrees. Mix together cake mix, eggs, oil, and mandarin oranges and juice; pour into a 9 by 13 inch greased and floured pan. Bake for 30 minutes or until done, cool. (It also made enough batter for two mini loaf pans).

Mix pineapple with pudding powder and Cool Whip. Spread over the cooled cake. Keep this cake refrigerated.