Preheat oven to 350 degrees.
In a large bowl, combine cake mix, melted butter, sweetened condensed milk, and nuts. Press half of the dough into a 9 x 13 greased pan. (Reserve the rest for topping.) Bake for 8 minutes.
Sprinkle chocolate chips over baked crust. Spread caramel sauce over chocolate chips. Crumble the rest of dough over caramel layer.
Bake for 18-20 minutes. Cool and cut into bars.
Caramel Sauce
In a sauce pan, combine caramels and 1/2 cup evaporated milk. Cook over low heat, stirring constantly, until caramels are melted.
Recipe submitted by Ron on 6/27/00