1 box yellow cake mix
1/2 c. oil
11 oz. can mandarin oranges (do not drain)
4 eggs

Beat together all ingredients for 2 minutes. Bake at 350 degrees for 25 minutes in three 9 inch pans.

Topping:
20 oz. can crushed pineapple (drained)
1 lg. Cool Whip
1 box vanilla instant pudding (lg.)

Mix well pineapple and Cool Whip. Gradually add vanilla pudding. Let cake cool then spread over top and refrigerate until serving.