Instructions:

1. Brown the butter in a light pan over medium-low heat until golden with a nutty aroma. Remove from heat and let cool 15–20 minutes.

2. In a bowl, whisk together brown sugar, granulated sugar, and cooled brown butter until combined.

3. Add the egg and vanilla, mixing until smooth.

4. In a separate bowl, sift flour, baking powder, baking soda, and salt. Gradually mix dry ingredients into wet until just combined.

5. Fold in chopped chocolate.

6. Chill dough for at least 30 minutes.

7. Preheat oven to 350°F (175°C). Scoop dough onto parchment-lined baking sheets. Optionally, press extra chocolate pieces on top.

8. Bake for 10–12 minutes until edges are golden and centers look set but soft.

9. Let cool on baking sheets for 5 minutes before transferring to a wire rack.