Toffee Bars
["2 c. flour", "1/4 tsp. salt", "1 c. butter or margarine", "1 c. brown sugar", "1 egg yolk", "1 tsp. vanilla", "1/2 lb. sweet chocolate", "1/2 c. chopped nuts"]
["Cream butter, sugar and egg yolk until creamy.", "Add vanilla. Stir in sifted flour and salt.", "Mix well.", "Spread in rectangle, about 10 x 13-inch on a greased cookie sheet.", "Bake at 350\u00b0 for about 20 minutes.", "While still warm, spread with melted chocolate. Sprinkle with chopped nuts.", "Cut into squares while still warm. Yields about 5 or 6 dozen."]
["flour", "salt", "butter", "brown sugar", "egg yolk", "vanilla", "sweet chocolate", "nuts"]