|Heat oven to 325 degrees. Mix the first 3 ingredients and spread in a 9x13 inch pan.Bake for 5 minutes. Mix cool whip, cream cheese, and sugar and spread on the crust.|
Drain the pineapple and add the cornstarch to the juice and cook until think and clear. Add the pineapple to the cooked juice mixture then spread this on top of the cool whip mixture. Refrigerate for at least 2 hours before serving.