Easy Coconut Cake
["1 sheet cake (yellow or white mix)", "1 c. milk", "1 c. sugar", "1 tsp. vanilla", "1 large carton Cool Whip", "coconut"]
["Bring milk, sugar and vanilla to a boil.", "Pour over cake while hot.", "Let cake cool, then spread with large container of Cool Whip and sprinkle with coconut.", "Keep in refrigerator."]
["cake", "milk", "sugar", "vanilla", "coconut"]