Preheat the oven to 325F then line a baking sheet with parchment paper.
Cream the butter and powdered sugar in a large bowl. Add in the vanilla and mix again. Add in the flour and salt and mix on low speed. Then mix in the chopped up pecans on low speed again.
1 cup butter, 2/3 cup powdered sugar, 2 tsp vanilla extract, 2 cup all purpose flour, 1/2 tsp salt, 2/3 cup pecans
Shape into balls and place on the prepared baking sheet and bake for 20 minutes.
Roll the warm cookies in the powdered sugar, then place on a cooling rack and let them cool down. Once cooled down, roll them in the powdered sugar again.