Walnut Shortbread Cookies

Preheat oven to 350°F.

Cream butter and powdered sugar until smooth.

Mix in vanilla and salt.

Stir in flour until dough forms.

Fold in chopped walnuts.

Roll dough into small balls and flatten slightly.

Place on lined baking sheet.

Bake 12 to 15 minutes until lightly golden.

Cool completely before serving.