- Cream butter, sugar, and vanilla until fluffy.
- Sift flour and salt together; add to creamed mixture.
- Mix well; stir in walnuts.
- Shape dough into walnut-sized balls.
- Bake on ungreased cookie sheet at 375 degrees for 12 to 15 minutes.
- Remove from cookie sheet with spatula.
- When still warm but cool enough to handle, roll in powdered sugar.