Beat butter, 1/2 cup powdered, and salt until creamy. Beat in the vanilla and then the flour and pecans.
Scoop dough into 1 tablespoon portions and roll into a ball. Place on an ungreased baking sheet. Bake for 8-10 minutes until edges are just barely browned.
Sift powdered sugar over the cookies as soon as they come out of the oven. Let cookies cool on the pan for 5 minutes and then move to a cooling rack. Once cooled completely, roll in a bowl of the remaining 1/2 cup powdered sugar.