Mix together cake mix with other brownie ingredients until combined. Add chocolate chips and stir in by hand.
Spread brownie batter into prepared 9x9 baking pan and top with additional chocolate chips.
Bake in a 350 degree oven for 23-28 minutes or until puffed and a toothpick comes out slightly covered in brownie. Remove from oven and allow to cool in pan .
To cut pull on the parchment paper and remove the entire pan of brownies from the pan. Use a plastic knife to cut clean pieces since it is nonstick.