Pineapple-Orange Cake
["1 yellow butter cake mix", "1 can Mandarin oranges (do not drain)", "1/2 c. oil", "4 eggs", "large (13 oz.) Cool Whip", "1 pkg. vanilla instant pudding (use dry)", "1 large can crushed pineapple"]
["Add cake mix, oranges, oil and eggs.", "Mix together well.", "Bake at 325\u00b0 for 30 minutes in 2 round layer pans.", "Let cool.", "Cut each layer in half; mix remaining ingredients and spread on layers."]
["yellow butter", "oranges", "oil", "eggs", "vanilla instant pudding", "pineapple"]