oven to 350 degrees F.
butter, add sugar and beat until fluffy. Add egg yolk,
and beat well. Stir in vanilla.
flour and stir until combined.
mixture into balls the size of a walnut. Roll balls
in unbeaten egg white, then in chopped walnuts.
a dint in the top of each cookie and place on a greased
cookie sheet, and bake 5 minutes.
and redint the tops of the cookies, then continue baking
until done - another 5-10 minutes. They should be slightly
the dints with a teaspoon of jam or jelly while they
are hot, and remove to a rack or plate to cool.