Cinnamon Squares
["1/2 c. margarine", "3/4 c. sugar", "1 egg yolk", "2 tsp. vanilla", "2 c. flour", "3 tsp. cinnamon", "1 egg white", "chocolate chips, chopped walnuts or coconut"]
["Cream margarine and sugar until fluffy; add egg yolks and vanilla and blend; add flour and cinnamon.", "Mix well.", "Divide dough between two greased 15 x 10 x 1 inch jelly roll pans.", "Flatten down with heels of hands in pans.", "Lightly beat the egg white and brush over batter.", "Mark batter into squares, place chocolate chips, nuts or coconut on top and bake 350\u00b0 for 20 - 30 minutes."]
["margarine", "sugar", "egg yolk", "vanilla", "flour", "cinnamon", "egg", "chocolate chips"]