Hawaiian Dream Whip Cake
["1 box yellow butter cake mix", "1/2 c. oil", "4 eggs", "1 (11 oz.) can mandarin orange slices (save juice)", "2 (2 oz.) cans crushed pineapple (in own juice)", "2 (3 1/2 oz.) pkg. vanilla pudding (not instant)", "1 (16 oz.) container Cool Whip"]
["Mix first 3 ingredients and beat at medium speed 4 minutes. Add juice from oranges and blend.", "Tear orange slices apart and blend into batter.", "Bake at 325\u00b0 for 20 to 25 minutes. Do not overbake.", "Cool completely."]
["yellow butter", "oil", "eggs", "orange slices", "pineapple", "vanilla pudding"]