PREHEAT oven to 350° F. Grease 8-inch-square baking pan.
PLACE whole bar of dough in prepared pan. Allow to soften for 5 to 10 minutes. Using fingertips, pat dough gently to fill pan.
BAKE for 24 to 26 minutes or until wooden pick inserted in center comes out slightly sticky. Cool completely in pan on wire rack.
COMBINE powdered sugar, cream cheese, butter and maple flavoring in medium bowl until smooth. Spread over brownies; cut into bars. Store tightly covered in refrigerator.