Unroll dough on work surface. With sharp knife or pizza cutter, cut dough into 4 rectangles. Place rectangles on cookie sheet. Cut 1-inch slit in centre of wide edge of each dough portion; on opposite wide edge across from slit, pinch dough together to shape point of heart. Slightly separate each cut slit, and gently press dough into a 6x5-inch heart, creating slight rim on edge of dough.