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 22 to 24 minutes or until golden brown.
SPRINKLE morsels over hot cookie. Let stand for 5 minutes or until morsels are shiny; spread evenly. Top with nuts. Cool completely in pan on wire rack. Cut into bars.