1Heat oven to 350°F. Generously spray bottom and sides of 13x9-inch pan with cooking spray.
2Place cookie mix in large bowl. Using pastry blender or fork, cut in butter and 4 oz cream cheese until mixture is crumbly (crumbs should be about pea-sized). Reserve 1 cup cookie mixture for Topping; set aside. Firmly press remaining cookie mixture evenly into bottom of pan.
3In small bowl, stir together 4 oz cream cheese, the sugar, pumpkin and flour. Stir in pumpkin pie spice until smooth. Spread over Cookie Base in pan. Sprinkle with reserved crumbs for Topping.
4Bake 25 to 30 minutes or until edges are golden brown. Cool completely in pan, about 30 minutes. Run metal spatula around edge to loosen. Cut into 4 rows by 3 rows.