Mexican Wedding Cakes

1 cup margarine
1/2 cup powdered sugar
1/2 teaspooon vanilla
1 3/4 cup flour
1/2 cup chopped nuts (walnuts or pecans are best)

Cream butter and sugar. Add vanilla, flour and chopped nuts. Shape into small balls and placed on ungreased cookie sheet. If dough is sticky, refrigerate 1 hour or so. Bake at 350 degrees for 10 minutes. Cool and roll in powdered sugar.