Toffee Bars
["2 1/2 c. flour", "1 1/4 c. sugar", "1 1/2 c. margarine, softened", "1 1/2 tsp. vanilla", "1 large egg, separated", "3/4 c. finely chopped pecans"]
["Three to five days before serving, preheat oven to 275\u00b0. Grease 15 x 10-inch jelly roll pan.", "Into large bowl, measure all ingredients, except egg white and pecans.", "With mixer at medium speed, beat ingredients until well mixed, occasionally scraping bowl; pat evenly into pan.", "In cup with fork, beat egg white slightly; brush over top of dough and sprinkle with nuts.", "Bake", "1 hour and 10 minutes or until golden brown.", "Immediately cut into 50 bars and remove from pan to cool on wire racks.", "Store in tightly covered container for at least 3 days before serving."]
["flour", "sugar", "margarine", "vanilla", "egg", "pecans"]