Citrus Ambrosia Cake

A friend gave this to me years ago. It's a stand-by that everyone loves. It's easy, too.

Beat together cake , margarine , eggs , and mandarin oranges on medium speed.

Use three pans and bake at 350 for 25-30 until toothpick comes out clean.

Let cool well.

For the topping , combine vanilla instant pudding , pineapple , and cool whip.

Beat until well mixed.

Frost each layer and refridgerate until set.

yellow cake mix, margarine, eggs, mandarin oranges, vanilla instant pudding mix, crushed pineapple, cool whip