Preheat oven 400 degrees.
Combine all dry ingredients and butter in food processor, pulse until fine crumbs form. Be careful not to overmix or use your hands. You want the little bits of butter to stay intact!
Add in the buttermilk as you pulse.
Dump the batter onto a clean flour surface.
Roll into a thick sheet, about 1/2 to 1 inch thick. The thicker the sheet, the bigger the cookie!
Cut with a cookie cutter and place on an ungreased baking sheet.
Baking for 15 min Top with melted butter if desired!