Russian Tea Cakes

By request... My grandma's Russian Tea Cakes/Snowballs/Mexican Wedding Cakes

Mix thoroughly:
1 cup soft butter
1/2 cup sifted powdered sugar
1 tsp. vanilla

Sift together and stir in:
2 1/2 cups flour
1/4 tsp. salt
1/2 cup chopped nuts (optional, and obviously don't sift the nuts!)

Chill dough. Roll into 1 inch balls. Place on an ungreased cookie sheet. Bake until set, but not brown. Roll in powdered sugar.
400 degrees for 10-12 minutes.

In memory of Margaret Faulkner (my grandma).
Credit to allrecipes.com for the picture.