1Heat oven to 400°F. In large bowl, mix 1 cup powdered sugar, the butter and vanilla. Stir in flour, nuts and salt until dough holds together.
2Shape dough into 1-inch balls. Place about 1 inch apart on ungreased cookie sheet.
3Bake 10 to 12 minutes or until set but not brown. Roll in additional powdered sugar while warm. Cool completely on wire rack, about 30 minutes. Roll in powdered sugar again.