Caramel Brownies

This recipe has been around for a while -- and for good reason. It's sooo good. I thought it would definitely have made its way on here by now, but since I can't find it I figured I'd post it. You're welcome.

50 caramels
2/3 cup evaporated milk, divided
1 package German chocolate cake mix
3/4 cup butter, melted
6 oz. semi-sweet chocolate chips

Over low heat, melt caramels with 1/3 cup evaporated milk, stirring frequently. Meanwhile, beat cake mix, butter, and remaining evaporated milk until blended. Pour half of batter into a 9" x 13" pan coated with nonstick cooking spray. Bake at 350*F for 6 minutes. Sprinkle chocolate chips evenly over batter; pour caramel mixture evenly over chips, leaving 1/2" border around edges. Pour remaining batter over caramel mixture and spread to edges, making sure to seal border. (Yes, it can be a pain to spread brownie batter over melted caramels. Just go with it.) Bake 18 minutes more. Cool to room temperature; refrigerate to allow caramel to set before cutting.