Fudgy Chocolate Cookie Bars
["1 3/4 c. unsifted flour", "3/4 c. confectioners sugar", "1/4 c. Hershey's cocoa", "1 c. cold margarine or butter", "1 (12 oz.) pkg. semi-sweet chocolate chips", "1 (14 oz.) can Eagle Brand sweetened condensed milk", "1 tsp. vanilla extract", "1 c. shelled walnuts or pecans, chopped"]
["Preheat oven to 350\u00b0.", "In bowl, combine flour, sugar and cocoa; cut in margarine until crumbly.", "Press on bottom of a 13 x 9-inch pan.", "Bake for 15 minutes.", "In saucepan, melt \"1 cup\" chips with sweetened condensed milk and vanilla.", "Pour over crust; top with nuts and remaining chips.", "Press down firmly.", "Bake for 20 minutes or until set.", "Cool. Cut into bars."]
["flour", "confectioners sugar", "cocoa", "cold margarine", "semi-sweet chocolate chips", "condensed milk", "vanilla extract", "walnuts"]