Stir dry ingredients into butter mixture until well-incorporated. Scrape the bottom and sides as needed to incorporate loose flour.
Form dough into 1-inch balls and put on cookie sheets, flattening with a fork or the bottom of a cup. If dough is too sticky to easily form into balls, refrigerate for 1 hour.
Bake for approximately 10 minutes. Let cool on cookie sheet 2 minutes before moving to a rack to finish cooling.