01 - Preheat the oven to 350°F and line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the gluten-free flour, baking powder, and salt until evenly distributed.
03 - In a large bowl, beat the softened butter and sugar with an electric mixer until light and fluffy, approximately 2-3 minutes.
04 - Beat in the egg and vanilla extract until the mixture is smooth and well combined.
05 - Gradually add the dry ingredients to the wet mixture, mixing on low speed until just combined. Be careful not to overmix.
06 - Gently fold in the chopped pistachios, reserving 2 tablespoons for garnish.
07 - Drop tablespoon-sized portions of dough onto the prepared baking sheets, leaving about 2 inches of space between each cookie.
08 - Bake for 10-12 minutes until the edges are lightly golden. The centers should still appear slightly soft.
09 - Let the cookies rest on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
10 - Once cooled, drizzle honey over each cookie and sprinkle with the reserved chopped pistachios. Allow the honey to set before serving.