Cream butter and gradually add powdered sugar. Add vanilla, creaming well. Gradually add flour and nuts. Mix thoroughly. Shape into 1 to 1 1/2 inch balls. Place on ungreased cookie sheet. Bake at 300 degrees for 35 minutes. Bottoms should be slightly brown.Tops will probably still be white.
2
While still warm, roll in sifted powdered sugar. Then immediately roll in powdered sugar again. Sift some more powdered sugar on top.Cool.