Prepare Baking Dish: Spray a 9 x 13-inch baking dish with nonstick cooking spray, preferably one that includes flour.
Mix Batter: In a bowl, combine the dry cake mix with the melted butter and beaten eggs. If available, use an electric or stand mixer for easier blending, as the batter will be quite thick.
Add Chocolate Chips: Stir in the semi-sweet chocolate chips until they are evenly distributed throughout the batter.
Spread Batter: Transfer the thick batter into the greased baking dish. A helpful tip is to spray your hand with nonstick cooking spray and then use it to spread the batter evenly since it can be quite thick.
Bake: Place the baking dish in the preheated oven and bake for about 20-25 minutes. The bars will puff up as they cook and develop a golden-brown hue around the edges when done.
Cool: Allow the baked bars to cool in the dish. The cooling process will further solidify the texture.
Cut and Serve: Once cooled, cut the bars into desired portions and indulge in the delectable combination of yellow cake and gooey chocolate.
Enjoy: Share these Yellow Cake Mix Chocolate Chip Bars with friends, family, or simply savor them as a delightful treat for yourself.
