Add dry ingredients and mix well. Add a little flour so at a time so that it's not sticky and is managable. Wrap dough in plastic wrap. Let the dough chill in fridge for 25 minutes or until firm. Note: I trick I started doing is placing some of the dough in between two sheets of parchment or wax paper and rolling it out to the desired thickness. Put the sheets in the fridge until firm then when ready start cutting into shapes with cookie cutters.
Source: my friend Allison Tolbert