Chocolate Streusel Bars
["1 3/4 C. unsifted flour", "1 1/2 C. powdered sugar", "1/2 C. unsweetened cocoa", "1 C. cold margarine or butter", "8 oz. cream cheese, softened", "14 oz. can sweetened condensed milk", "1 egg", "2 tsp. vanilla", "1/2 C. chopped walnuts"]
["In a large bowl combine flour, sugar and cocoa.", "Cut in margarine until crumbly (mixture will be dry).", "Reserving 2 cups crumb mixture; press remainder on bottom of 9 x 13-inch baking pan. Bake 15 minutes at 350 degrees."]
["flour", "powdered sugar", "unsweetened cocoa", "cold margarine", "cream cheese", "condensed milk", "egg", "vanilla", "walnuts"]