- In a stand mixer, combine the flour, butter, sugar, and salt. Using the paddle attachment, mix the ingredients on low speed until combined. Add the vanilla. Mix until the dough is smooth and comes together.
- Turn the dough out onto a floured work surface. Divide into 2 pieces. On the edge of a piece of parchment or waxed paper, shape the dough into a log, and carefully roll up until the paper ends, folding the outside corners into the log. Repeat with the second piece of dough. Refrigerate for at least 30 minutes.
- Preheat the oven to 275 degrees F.
- Remove the rolled logs, unwrap, and cut into 1/4-inch slices. Transfer to ungreased cookie sheets and bake until golden on the edges, about 25 minutes. Transfer the cookies to wire racks to cool for 15 to 20 minutes before handling.