Preheat the oven to 350ºF. Then grease a 9x13 inch baking pan with non-stick cooking spray or butter. Set aside.
In a large mixing bowl, mix together the cake mix, melted butter, and eggs. Use an electric mixer or whisk until well combined.
Using a spatula, fold the chocolate chips into the batter.
Scoop the batter into the greased baking pan and spread out evenly edge to edge.
Bake at 350ºF for 20-25 minutes until golden brown or a toothpick comes out clean.
Cool in the pan for 10 minutes, then cut into 12 bars.
Serve and enjoy!
Notes
This Recipe Can be Doubled: This is a great recipe for a crowd. Simply increase the ingredients proportionately and split it into two baking dishes before baking.
Add Sugar: Before the batter goes into the oven, sprinkle some sugar on top to give these cookie bars a sweet and crunchy top layer.
Store This Dessert: The leftover cookie bars can be kept in an airtight container at room temperature for up to five days, or frozen for up to three months.