Preheat oven to 350 degrees F. Spray a 13 x 9-inch baking pan with Pam.
Combine first 3 ingredients. Press into bottom about 1 inch up the sides of prepared baking pan.
Mix together next 6 ingredients and pour over crust. Bake for 45 minutes, or until golden brown on top. Let cool completely to set, and cut into small squares.