01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, baking soda, baking powder, and fine sea salt in a medium bowl.
03 - Beat butter, honey, and brown sugar with an electric mixer until creamy and light, about 2-3 minutes.
04 - Add egg and vanilla extract to the butter mixture. Beat until fully incorporated.
05 - Gradually add dry ingredients to wet ingredients, mixing until just combined. Fold in chopped pistachios.
06 - Scoop tablespoon-sized portions of dough onto prepared baking sheets, spacing about 2 inches apart. Lightly flatten each ball and sprinkle with flaky sea salt.
07 - Bake for 10-12 minutes until edges are lightly golden but centers remain soft.
08 - Allow cookies to cool on the sheet for 5 minutes before transferring to a wire rack to cool completely.