Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a mixing bowl, combine the room temperature unsalted butter and granulated sugar, and beat until light and fluffy for 2-3 minutes.

Gradually add all-purpose flour to the creamed mixture, mixing on low speed just until combined.

Gently fold in the chopped roasted unsalted pistachios and vanilla extract until evenly distributed.

Portion out dough and roll each into a round ball. Place on the prepared baking sheet, leaving space between each.

Bake in the preheated oven for 10-12 minutes, or until edges are lightly golden.

Let the cookies cool on the baking sheet for about 5 minutes before transferring to a wire rack.