Pina Colada Cake
["1 box Duncan Hines yellow cake mix (not pudding recipe)", "1 can Eagle Brand milk", "1 small (9 oz.) can pin colada mix", "1 (7 1/2 oz.) can frozen coconut", "1 (8 oz.) Cool Whip"]
["Use 13 x 9 x 2 sheet pan."]
["cake mix", "milk", "colada mix", "frozen coconut"]