Cake:

1 box yellow cake mix
4 eggs
1/2 c. vegetable oil
1 (11 oz.) can mandarin oranges with juice

Mix all ingredients for cake together with a mixer for 2 minutes. Pour into greased and floured 9 x 13 cake pan.

Bake at 350°F for about 40 minutes. Check with toothpick. It sometimes takes longer. Cool completely and frost.

Frosting:

12 oz. cool whip
20 oz can crushed pineapple with juice
1 small pkg. vanilla instant pudding

Mix together the ingredients for frosting by hand. Frost cake. Store in the refrigerator before serving.