Once the dough has chilled, take one piece of dough out of the refrigerator, and flour a clean work surface. Roll the dough 1/8″ to 1/4″ thick; the thinner you roll the dough, the crispier the cookies will be. Flour both the top and bottom of the dough if it starts to stick. Alternatively, place the dough on parchment, and put a sheet of plastic wrap over it as you roll, pulling the plastic to eliminate wrinkles as necessary when rolling; this will keep dough from sticking without the need for additional flour.