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

In a large mixing bowl, combine the melted butter, brown sugar, and granulated sugar. Stir until smooth. Add in the eggs one at a time, mixing well between each addition, along with the vanilla extract.

In another bowl, whisk together the flour, cocoa powder, baking powder, and salt until well combined.

Gradually add the dry ingredients to the wet mixture, folding gently to combine until there are no visible flour streaks. Be careful not to over-mix.

Fold in the chocolate chips, ensuring they’re evenly distributed throughout the dough.

Using a cookie scoop or tablespoon, portion out the dough onto the prepared baking sheets, leaving enough space between each cookie to allow for spreading.

Bake for 10-12 minutes, or until the edges are set but the center still looks slightly underbaked.

Allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.