Golden Cookies

Cream butter, vanilla, and lemon zest together until butter is softened. Add sugar gradually into butter mixture, creaming until fluffy after each addition. Add yolks one at a time, beating well after each addition. Add dry ingredients, one fourth at a time, beating until just blended. Make 1 inch balls and place about 2 inches apart on ungreased cookie sheets. Bake at 350F degrees for 10 minutes or until golden brown.