Preheat oven to 350 degrees (F).
Mix together butter, powdered sugar, flour, vanilla, and chopped pecans.
Roll out in small oblong balls and place on lightly greased (or parchment paper-lined) cookie sheet.
Bake for 20 minutes until golden brown.
Roll still-warm tarts in additional powdered sugar.
Yields 15 to 20 cookies
https://cinnamonsugarandalittlebitofmurder.com