Preheat your oven to 350°F (175°C).
Cream together the softened butter and 1/2 cup powdered sugar until light and fluffy.
Add in the vanilla extract and mix well.
In a separate bowl, whisk together the flour and salt.
Gradually add the dry ingredients to the butter mixture, mixing until combined.
Stir in the chopped nuts until evenly distributed.
Shape the dough into small balls and place them on an ungreased baking sheet.
Bake for 15-20 minutes, or until the bottoms are lightly golden.
Remove from the oven and allow to cool for a few minutes.
Roll the warm cookies in powdered sugar before transferring them to a wire rack to cool completely.