Preheat your oven to 350°F (175°C).
In a mixing bowl, cream the softened butter and powdered sugar until light and fluffy.
Add the vanilla extract and mix well.
In another bowl, whisk together the flour and salt.
Gradually add the dry ingredients to the butter mixture, mixing until just combined.
Fold in the chopped nuts until evenly distributed.
Roll the dough into 1-inch balls and place them on a baking sheet lined with parchment paper.
Bake for 20-25 minutes or until the bottoms are lightly golden.
Remove from the oven and let cool for a few minutes.
While still warm, roll the cookies in powdered sugar until coated.