Preheat the oven to 350°F (175°C). Grease a 9x13-inch baking dish.

In a microwave-safe bowl, melt the butter. Add the granulated sugar and stir until well combined.

Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.

In a separate bowl, whisk together the flour, cocoa powder, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Fold in the chocolate chips.

Pour the batter into the prepared baking dish and spread it evenly.

Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.

Allow the brownies to cool completely before cutting into squares.