Heat the blueberries and sugar until sugar melts. Place blueberry mixture into a greased 9 ... pineapple. Sprinkle the cake mix over this mixture. Drizzle the ... 350°F for 40 minutes.
Bake cake according to box directions using ... Cool Whip and mix together. Frost 1 layer of ... blueberries next, then top with frosting. Refrigerate.