Biscuits Romanian-style

Description
In Romanian: Pesmeciori

Ingredients

 * 5 oz / 140 g butter
 * 5 oz / 140 g confectioner's sugar
 * 3 yolks
 * 1 egg white
 * 1 teaspoon vanilla
 * 2 tablespoons ground walnuts
 * 1 tablespoon granulated sugar
 * flour as needed

Directions

 * 1) Cream the butter with the sugar, add the 3 yolks one by one, vanilla, ground walnuts and flour as needed, kneading quickly, to make a soft dough.
 * 2) Make patties about half an inch thick and 2 inches diameter.
 * 3) Place on a baking sheet, wash with beaten egg white and sprinkle with walnuts mixed with granulated sugar.
 * 4) Bake at medium heat.