Preparation

• Cream together the unsalted butter and powdered sugar until light and fluffy.
• Sift the flour and add it to the butter mixture. Mix until combined, then fold in the finely chopped pistachios.
• Divide the dough into two portions. Roll into logs, wrap in plastic, and refrigerate for at least 2 hours.
• Preheat oven to 350°F (175°C). Slice the dough into ¼-inch thick rounds and place on a parchment-lined baking sheet.
• Bake for 10-12 minutes until edges are lightly golden. Let cool on the baking sheet before transferring to a wire rack.