2 1/4 cups flour
1 3/4 cups sugar
1 cup softened butter [unsalted]
1 egg [yolk only]
1/2 cup finely chopped walnuts [optional]
In a large bowl, beat together the butter, egg yolk and the sugar until smooth and almost white in color. Add flour and blend well. If you are using the nuts, this is the time to add them in. Shape into small rectangles about 3/4" by 1 1/2". Bake in a 250 degree oven on an UNGREASED cookie sheet. Cookies are done when the bottoms turn pink in color [35-45 mins.].
NOTE: A blanched almond or walnut half can be placed on top of the cookie before baking.