Lemonade Cake
["1 box Duncan Hines lemon cake mix", "1 can Eagle Brand sweetened condensed milk", "1 (6 oz.) can Minute Maid frozen lemonade", "1 (10 oz.) Cool Whip"]
["Bake cake mix as directed on box.", "Cool and split layers.", "Mix sweetened condensed milk and frozen lemonade with mixer; fold in Cool Whip and frost.", "Keep in refrigerator."]
["lemon cake mix", "condensed milk", "frozen lemonade"]