Cream butter and 1/2 cup powdered sugar in a large mixing bowl.
Add in the vanilla extract, flour, and salt. Mix until dough comes together. Will start off crumbly, but keep mixing.
Stir in the chopped pecans.
Press the dough together on a piece of wax paper or plastic wrap. Chill the dough in the refrigerator for at least 30 minutes.
Preheat oven to 350 degrees Fahrenheit.
Divide the dough, and roll each portion of the dough into 1 inch balls.
Place on baking sheet lined with silicone baking mat. If using one baking sheet, place remaining dough in the refrigerator until ready to be baked.
Bake for 15-17 minutes until the cookies start to turn golden along the bottom edge.
Remove from oven and allow too cool.
In a small bowl add the remaining 1 cup of powdered sugar. Dip the baked cookies into the powdered sugar, placing on a wire rack once done. For best results dip the cookies twice.