01 -
Set oven temperature to 350°F (177°C).
02 -
Grease a 9x13-inch baking dish with nonstick cooking spray containing flour.
03 -
In a bowl, combine yellow cake mix, melted salted butter, and beaten eggs. Mix thoroughly using an electric mixer due to thick consistency.
04 -
Fold in semi-sweet chocolate chips until evenly distributed.
05 -
Using hands sprayed with nonstick cooking spray, evenly spread the thick batter in the prepared baking dish.
06 -
Bake for 20-25 minutes until the bars puff up and edges turn golden brown.
07 -
Allow bars to cool before cutting and serving.