Add eggs, oil and juice from oranges to cake mix. Beat, then fold in oranges, seperate into three 8in cake pans, bake at 350 until toothpick inserted in center comes out clean. Cool until COMPLETELY cool.
Large container of Kool whip, vanilla pudding mix, mix well together add crushed pineapples and juice. Frost cake and store in refridgerator.
I used to use double the icing but you may not have to. I just like to make it tall.