Chocolate Caramel Bars
["1 (14 oz.) pkg. caramels", "1 (5 oz.) can evaporated milk", "1 box Betty Crocker SuperMoist German chocolate cake mix", "1/2 c. margarine, melted", "1 (6 oz.) pkg. semi-sweet chocolate pieces", "1/2 c. chopped walnuts"]
["Melt caramels with 1/3 cup milk, stirring until smooth. Combine remaining milk, cake mix and margarine; mix well.", "Press half of cake mix into bottom of ungreased 9 x 13-inch pan. Bake at 350\u00b0 for 6 minutes. Sprinkle chocolate pieces and 1/2 cup walnuts over crust. Drizzle with caramel mixture. Top with rest of remaining cake mixture, pressing gently onto caramel. Sprinkle with remaining walnuts. Bake at 350\u00b0 for 18 to 20 minutes. Cool slightly. Chill and cut into bars."]
["caramels", "milk", "chocolate cake", "margarine", "semi-sweet chocolate pieces", "walnuts"]