1 cup butter
1/2 cup powdered sugar
1 tsp vanilla
2 1/4 cup flour
1/4 tsp salt
3/4 cup chopped nuts, typically walnuts
Cream together the butter, powdered sugar and vanilla. Add the flour and salt and mix until the dough starts to come together. Add the nuts. Roll into 1-inch balls and bake at 400 degrees for 10-12 minutes. They should not get brown.
While they are still warm roll them in powdered sugar. Let them cool completely and roll in sugar again.