Directions:

1. Preheat your oven:
   Preheat the oven to 350°F (175°C). Grease an 8×8-inch (20×20 cm) square baking pan or line it with parchment paper.

2. Prepare the wet ingredients:
   In a medium mixing bowl, whisk together the melted butter and sugar until smooth and well combined. Add the eggs and vanilla extract, and whisk again until the mixture is glossy and smooth.

3. Combine the dry ingredients:
   In a separate bowl, sift together the flour, cocoa powder, salt, and baking powder. This helps to prevent lumps and ensures a smooth batter.

4. Mix the dry ingredients into the wet ingredients:
   Gradually add the dry mixture to the wet mixture, stirring just until combined. Be careful not to overmix, as this can make the brownies less fudgy.

5. Add chocolate chips (optional):
   If you’re adding chocolate chips, fold them gently into the batter for an extra fudgy texture.

6. Bake the brownies:
   Pour the brownie batter into the prepared baking pan and spread it evenly. Bake for 20-25 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs (not wet batter). For extra fudginess, be careful not to overbake.

7. Cool and cut:
   Allow the brownies to cool in the pan for about 10 minutes. Then, transfer them to a wire rack to cool completely. Once cooled, cut into squares.

8. Serve and enjoy:
   Serve these fudgy brownies with a glass of milk, or enjoy them as is! They’re perfect for any occasion.

These brownies are incredibly rich, dense, and fudgy—exactly what you want in a perfect chocolate dessert! Enjoy!