Heat oven to 375°F. In medium bowl, beat filling ingredients with electric mixer on medium speed until well blended; set aside.
Remove cookie dough from wrapper; place in ungreased 13x9-inch pan. With floured fingers, press dough evenly in bottom of pan. Spoon and spread filling evenly over crust.
Bake 17 to 20 minutes or until edges begin to brown. Cool completely, about 40 minutes.
In another medium bowl, mix topping ingredients; spread over top. Store in refrigerator.