1. Prepare the Cookie Dough

1. Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone mats.
2. In a large mixing bowl, whisk together the melted butter, granulated sugar, and brown sugar until smooth.
3. Add the eggs and vanilla extract, mixing until well combined.
4. Sift in the cocoa powder, baking powder, and salt. Stir until incorporated.
5. Gradually fold in the flour until a thick batter forms. Mix in the chocolate chips, if using.

2. Bake the Cookies

1. Drop tablespoon-sized portions of dough onto the prepared baking sheets, spacing them about 2 inches apart.
2. Bake for 8–10 minutes, or until the edges are set but the centers still appear soft. Do not overbake.
3. Remove from the oven and allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.

3. Prepare the Meltaway Glaze

1. In a small bowl, whisk together the powdered sugar, cocoa powder, and vanilla extract.
2. Add the milk, one tablespoon at a time, until the glaze reaches a drizzling consistency.

4. Glaze the Cookies

1. Once the cookies are completely cool, drizzle the glaze over the top using a spoon or piping bag.
2. Allow the glaze to set for 15–20 minutes before serving.