Preheat your oven to 350°F (175°C) and grease a 9x13-inch baking pan or line it with parchment paper for easy removal.
In a large mixing bowl, combine the cake mix, melted butter, and eggs. Stir until the mixture is fully combined and smooth.
If you want an extra chewy texture, mix in the brown sugar to your batter and stir until blended.
Once combined, fold in the chocolate chips, ensuring they are evenly distributed throughout the batter.
Pour the batter into the prepared baking pan and spread it evenly.
Bake in the preheated oven for 18-22 minutes, or until the edges are lightly golden and a toothpick inserted in the center comes out with a few moist crumbs.
Allow the bars to cool completely in the pan before cutting them into squares. Enjoy your sweet creation!