Preheat your oven to 350°F. Grease a 9x13-inch baking pan or line it with parchment paper for easy removal.
In a large mixing bowl, melt the butter in the microwave or on the stovetop. Stir in the granulated sugar 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 mixture, stirring until just combined.
Fold in the chopped chocolate-covered pretzels, ensuring they are evenly distributed throughout the batter.
Pour the brownie batter into the prepared baking pan, spreading it out evenly. If desired, sprinkle chocolate chips on top.
Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Allow the brownies to cool in the pan for at least 15 minutes before cutting into squares. For best results, let them cool completely before serving.