PREHEAT oven to 325° F. Line 15 1/2 x 10 1/2-inch jelly-roll pan with foil.
PLACE two whole bars of dough in prepared pan. Allow to soften for 5 to 10 minutes. Using palms and fingertips, pat dough gently to fill the pan.
BAKE for 22 to 25 minutes or until light golden brown. Cool in pan on wire rack for 30 minutes. Invert onto wire rack; peel away foil. Cut away edges of dough to form a 14 x 9-inch rectangle. Measure and cut this rectangle into twenty-one 2 x 3-inch individual rectangles.
SPREAD frosting over cookie cards; top with Nestlé Hearts and candies. Allow frosting to harden slightly (about 30 minutes) before putting into bags.
Cook's Tip: Need more cookies in a hurry? Try our NESTLÉ TOLL HOUSE Valentine Hearts Sugar Cookies. These heart-shaped cookies are imprinted with Valentine's Day phrases and decorating them is easy with the red icing packet that is included.