Double Chocolate Cookie Bars
["2 c. finely crushed creme filled chocolate sandwich cookies (about 24)", "1/2 c. margarine, melted", "1 (12 oz.) pkg. semi-sweet chocolate chips", "1 (14 oz.) can sweetened condensed milk", "1 tsp. vanilla", "1 c. chopped nuts"]
["Preheat oven to 350\u00b0.", "Combine cookie crumbs and margarine; press firmly on bottom of 13 x 9-inch pan.", "In medium saucepan over medium heat, melt 1 cup chocolate chips with sweetened condensed milk and vanilla.", "Pour evenly over prepared crust.", "Top with nuts and remaining chips.", "Bake 20 minutes or until set; cool.", "Chill if desired.", "Cut into bars.", "Store tightly covered at room temperature."]
["cookies", "margarine", "semi-sweet chocolate chips", "condensed milk", "vanilla", "nuts"]