Making brownie cupcakes can be a delightful experience! Follow these steps to create your own rich chocolate treats:

1. Preheat Your Oven: Set your oven to 350°F (175°C) and line a 12-cup muffin tin with cupcake liners.
2. Mix Dry Ingredients: In a large bowl, sift together the cocoa powder, all-purpose flour, baking powder, and salt.
3. Combine Sugars and Butter: In another bowl, mix the granulated sugar, brown sugar, and melted butter until well combined.
4. Add Eggs: Beat in the eggs one at a time, followed by the vanilla extract, ensuring everything is blended smoothly.
5. Combine Wet and Dry Mixtures: Gradually add the dry mixture to the wet mixture, stirring until you achieve a smooth batter.
6. Fold in Chocolate Chips: If using, gently fold in the semi-sweet chocolate chips for an added chocolate boost.
7. Fill the Muffin Tin: Distribute the batter evenly among the cupcake liners, filling each about ¾ full.
8. Bake: Place the muffin tin in the preheated oven and bake for 20-25 minutes or until a toothpick inserted in the center comes out with a few moist crumbs.
9. Cool: Remove the cupcakes from the oven and allow them to cool in the tin for about 15 minutes. Then transfer them to a wire rack to cool completely.
10. Dust with Powdered Sugar: For a final touch, dust the tops with powdered sugar before serving, if desired.

With these simple steps, you’re ready to savor your delicious brownie cupcakes!