Toffee Cookie Squares
["2 c. sifted flour", "1/8 tsp. salt", "1 c. brown sugar", "1 c. margarine", "1 egg yolk, beaten", "1 tsp. vanilla", "8 oz. semi-sweet chocolate", "1/8 c. chopped nuts"]
["Sift flour.", "Add salt and sugar.", "Cut in margarine until mixture resembles coarse meal.", "Add beaten egg yolk and vanilla. Pack into a 9 x 9-inch square pan.", "Bake at 350\u00b0 for 15 to 20 minutes.", "While warm, spread with melted chocolate.", "Sprinkle with chopped nuts.", "Cool and cut into small squares."]
["flour", "salt", "brown sugar", "margarine", "egg yolk", "vanilla", "semi-sweet chocolate", "nuts"]