Prep Time 20 minutes mins
Cook Time 14 minutes mins
Resting Time 1 hour hr 20 minutes mins
Total Time 1 hour hr 54 minutes mins
Brown the butter ahead so it has time to cool; if it’s warm, the dough will be greasy and spread more. Toasting pistachios intensifies flavor—5 to 7 minutes at 325°F is enough—then cool before chopping to avoid melting the butter in the dough. For clean rounds, use a sharp knife and a gentle sawing motion, or freeze logs for 10 minutes before slicing. If dough crumbles while slicing, press slices back together on the sheet; shortbread is forgiving. Swap 1 to 2 tablespoons of flour for finely ground pistachios for a greener hue, or dip edges in melted white chocolate once cooled. Store airtight for up to 1 week or freeze dough logs for 2 months for bake-on-demand cookies.