Lemonade Cake
["1 lemon cake mix", "1 can sweetened condensed milk", "1 (6 oz.) can lemonade, thawed", "1 small container Cool Whip"]
["Prepare and", "bake", "cake according to directions on box. Cut the 2 layers in half to make 4 layers.", "Mix other ingredients; frost cake and refrigerate for 2 days."]
["lemon cake mix", "condensed milk"]