Icebox Coconut Cake
["1 pkg. yellow cake mix", "2 (6 oz.) pkg. frozen coconut, thawed", "7 Tbsp. powdered sugar", "12 oz. can evaporated milk (not sweetened)", "9 oz. carton Cool Whip"]
["Mix cake mix by directions on the box.", "Add frozen coconut and bake in a 9 x 13-inch pan."]
["yellow cake mix", "frozen coconut", "powdered sugar", "milk"]