Melt caramels with 1/3 cup evaporated milk. Mix together cake mix, butter, and 1/3 cup evaporated milk. Spread 1/2 of the cake mixture in greased 9 x 13 inch pan. Bake for 6 minutes. Sprinkle nuts and chocolate chips over baked cake. Drizzle caramel over nuts and chocolate chips. Crumble and pat on the remaining cake mixture and bake for 20 minutes at 350 degrees.
Remove from oven and while hot, cut into into 18 - 24 pieces. Delicious served warm. Let cool completely before storing in covered container.