1Prepare cake by package directions and spoon into 9x13 inch pan. Bake at 350 degrees until done. Remove and punch holes all over surface of cake with toothpick.
While cake bakes, mix together crushed pineapple and sugar and beat until sugar dissolves. Spoon over cake. Prepare vanilla pudding as directed. When it thickens, spoon it over cake. Chill; spread cake with thawed Cool Whip. Sprinkle coconut over top. Keep refrigerated.