PREHEAT oven to 350º F. (325° F. for dark pan.) Grease 13 x 9-inch baking pan.
PLACE whole bars of dough in prepared pan. Allow to soften for 5 minutes. Using fingertips, pat dough gently to evenly cover bottom of pan.
BAKE for 25 to 30 minutes or until wooden pick inserted in center comes out clean and edges are golden brown. Cool completely in pan on wire rack. Cut into bars. Store tightly covered in pan or in resealable container.