Chewey Gooey Brownies

2/3 cup evaporated milk, divided
40 Kraft caramels, unwrapped
1 cube butter
1 german chocolate cake mix
1 package chocolate chips

Mix 1/3 cup evaporated milk, cake mix and butter. Spread half of this mixture in the bottom of a greased 9X13 pan. Bake for 15 min. @ 350. Melt caramels and remaining evaporated milk in a pot over the stove on med low, stirring constantly. Pour over baked brownies. Sprinkle on the whole bag of chocolate chips. Then plop remaining cake mixture over chocolate chips. Bake for 15 more min. Let cool before cutting or serving.