Chocolate-Caramel-Nut Bars

Chocolate-Caramel-Nut Bars 1 pkg. (11 oz.) Caramels 1 can (5 oz.) evaporated milk (2/3 cup), divided 1 pkg. (2-layer size) German chocolate cake mix 1/2 cup butter or margarine, melted 1-1/2 cups chopped Walnuts, divided 1 pkg. (4 oz.) BAKER'S Semi-Sweet Chocolate, chopped, divided Heat oven to 350°F. Cook caramels and 1/3 cup milk in saucepan on low heat 5 to 7 min. or until caramels are completely melted and mixture is well blended, stirring frequently. Remove from heat. Combine cake mix, butter and remaining milk; press half onto bottom of 13x9-inch pan sprayed with cooking spray. Bake 10 min. Sprinkle with 1 cup nuts and 1/2 cup chopped chocolate. Drizzle with caramel sauce; carefully spread to edges of pan. Top with teaspoonfuls of the remaining cake mix mixture; press gently into caramel sauce with back of spoon. Sprinkle with remaining nuts and chocolate. Bake 18 min. or until lightly browned. Cool completely before cutting into bars. NOTES Use Your Microwave Microwave the caramels and 1/3 cup milk in microwaveable bowl on HIGH 3 to 4 min. or until caramels are completely melted and sauce is well blended, stirring every 2 min. For easy cleanup, line baking pan with foil using this easy method. Turn pan upside down and fit a piece of foil over top of pan, smoothing corners as needed. Remove foil. When you turn the pan over, the foil fits perfectly inside the pan.