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

In a mixing bowl, melt the butter in the microwave or on the stove. Allow it to slightly cool.

Add the granulated sugar to the melted butter and mix well using a whisk.

Stir in the egg and vanilla extract until fully combined.

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

Gradually add the dry ingredients to the wet mixture, mixing with a spatula until just combined. Be careful not to overmix.

Fold in the chocolate chips until evenly distributed in the dough.

Using a tablespoon or cookie scoop, drop spoonfuls of dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers are still soft.

Remove from the oven and let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.

For extra flavor, consider adding chopped nuts or a sprinkle of sea salt on top before baking.

Store leftover cookies in an airtight container for up to a week.