1 lb Powdered Sugar

    1/2 c  Butter or Margarine

      4    Chocolate Squares, melted

      4    Eggs, well beaten

      1 ts Vanilla

  1 1/2 c  Flour

      1 c  Walnuts, chopped

  Cream sugar and butter until light and fluffy. Add melted chocolate and
  vanilla, beat well. Add eggs and stir in flour. Fold in nuts. Grease and
  flour a 9x13 pan. Preheat oven to 350oF and bake for 25-30 minutes. Cool
  and cut. DO NOT OVERBAKE.
  Source: "The Yankee Kitchen" 03-30-93 (#3) [Lorraine]