Preheat oven to 350°F.

Mix flour, baking soda, baking powder, and salt in a bowl.

In another bowl, whisk melted butter, brown sugar, and granulated sugar until pale.

Add vanilla and egg to the wet mixture, mix well.

Gradually add dry ingredients to wet, mix until just combined.

Fold in chocolate chips and chopped pistachios.

Scoop dough onto a baking sheet.

Bake for 15 minutes until edges are golden.