Combine Cool Whip (or whipped cream) with shredded coconut and spread evenly over the top of the pineapple. Mix pineapple and pudding mix in a bowl; fold in whipped … While cake is baking, prepare frosting: Combine butter, sugar, and evaporated milk in a saucepan. Spread the frosting evenly over the hot cake. Drain crushed pineapple and spread evenly over the top of the cake. Bring to a boil; cook and stir over medium heat until thickened, about 5 minutes. Poke holes in the hot cake with the top of a wooden spoon. Poke holes into cake using a skewer or straw; spoon gelatin mixture evenly over cake. Refrigerate for 4 hours. https://www.yummly.com/recipes/pineapple-coconut-cake-with-cake-mix Remove from heat and stir in vanilla, salt, pecans, and coconut. Cover and refrigerate until ready to serve. Stir pineapple-flavored gelatin with boiling water in a bowl until dissolved; stir in cold water.