Preheat the oven to 350°F and grease a 9x13-inch baking dish.
Unwrap the caramels and melt them with 7 ounces of sweetened condensed milk in a pan on the stovetop or in a bowl in the microwave.
In a large bowl, combine the remaining sweetened condensed milk with the melted butter, dry cake mix, and 1/2 cup pecans. The batter will be thick.
Place half of the brownie batter in the greased baking dish and bake in the preheated oven for 6 minutes.
Remove the dish from the oven and sprinkle with 1 cup of chocolate chips and the remaining pecans. Pour the caramel mixture on top.
Flatten the remaining batter by pressing it between your hands and place it over the caramel. Sprinkle with the remaining chocolate chips and bake for 15 more minutes.
Remove the pan from the oven and allow the brownies to cool completely in the pan. Cut the brownies into squares and enjoy!