Preheat oven to 400°F. Line a baking sheet with parchment paper.
Combine flour, walnuts and salt in a small bowl. Set aside.
Beat butter, vanilla, and powdered sugar with a mixer until creamy.
Turn the mixer to low and add flour mixture until combined.
Form dough into 1" balls and place on prepared pan.
Bake 8-10 minutes or until bottom edges of cookies are lightly browned.
Cool a few minutes until you're able to handle the cookes. Roll in powdered sugar and place on a rack to cool completely.
Source:
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