Preheat your oven to 350°F. Grease a 9x13 inch baking dish and set aside.

In a microwave-safe bowl, melt the butter and cocoa powder together until smooth. Let it cool slightly.

In a large mixing bowl, combine granulated sugar, eggs, vanilla extract, and the melted cocoa mixture. Whisk until smooth.

Add the flour and salt gradually, mixing just until combined. Fold in chocolate chips.

Pour the batter into the prepared baking dish and bake for 25 minutes, or until a toothpick inserted into the center comes out with moist crumbs.

Allow the brownies to cool in the pan before slicing and serving.