This delicious recipe comes from Cook's Illustrated. DH and I made these cookies for Christmas and everyone raved about them. According to Cook's Illustrated, the dough will keep in the refrigerator for up to three days or in the freezer for up to two weeks. The cookies are best eaten the day they are glazed. Prep time does not include the 45 minutes dough is in freezer (or 2 hrs refrigerated) or one hour cooling time.