Pig Pick'N Cake
["1 box yellow cake mix", "3/4 c. Wesson oil", "4 eggs", "1 (11 oz.) can mandarin oranges (with juice)", "1 large can crushed pineapple, slightly drained", "1 (3 oz.) pkg. dry vanilla instant pudding", "1 large carton Cool Whip"]
["Cake: Mix cake mix, oil, eggs and mandarin oranges. Divide into 3 equal layers. Bake at 350\u00b0 for 22 minutes. Cool."]
["yellow cake mix", "Wesson oil", "eggs", "mandarin oranges", "pineapple", "vanilla instant pudding"]