Aunt Stella's Cookies

1 c. butter

1 c. sugar

1 egg seperated

1 t. vanilla

1 1/2 - 2 c. flour

Cream together butter and sugar. Add egg yolk and vanilla. Add flour until it forms a good dough. Roll into 3/4" balls and flatten slightly. Brush with egg whites. Garnish with a walnut or a marachino cherry half. Bake 7 minutes in a 350 degree oven.