Preheat oven to 350°. Line pan with parchment or baking mat.
Mix dough using stand mixer or hand mixer in order of ingredients above.*I suggest not doubling this particular recipe. It is thick and may be too hard on your mixers. Instead, make separate batches.* Chill dough thoroughly. *Dough can be prepared in advance and frozen for use at a later date.*
Bar cookies: Evenly press dough on greased and floured sheet pan. Cut-out cookies: Flour counter. Using small portions of dough at a time, roll out to 1/4" thickness and cut out shapes.
Bake 10-13 minutes. Cookies will not look brown. If preparing bars in a large pan, baking time may require a few more minutes depending on thickness of bars.
Allow to cool completely on cooling racks before frosting.