Place the sugar, butter, and salt in the bowl of a stand mixer with the paddle attachment and mix on medium speed until the mixture is smooth about 2 minutes.
Stop the mixer, scrape down the bowl, and add all the flour at once. Turn the mixer to low speed and mix until all the flour is just combined. The dough will be crumbly at this point. Increase the mixer speed to medium and mix until the dough has completely come together.
Turn the cookie dough out onto a lightly floured surface. You can turn it out onto a large piece of parchment paper or Silpat. Use your hands to shape the dough into a rectangle and lightly flour the top of the dough. Do not use too much flour, just enough to keep the rolling pin from sticking.
Roll the cookie dough out to 1/4-inch thickness. Use your favorite Christmas cookie cutters to cut out the cookies. Gather the dough scraps, form them into a ball and reroll the cookie dough. Cut out the cookies, repeat these steps until almost all the dough is used up. Use the tines of a fork to poke holes in the center of each cookie.
Chill the dough for 20 minutes. If chilling overnight cover the cookies with plastic wrap.