Russian Tea Cakes

1 cup butter or margarine softened
1/2 cup powdered sugar
1 teaspoon vanilla
2 1/4 cups all-purpose flour
1/4 teaspoon salt
3/4 cup finely chopped nuts
Powdered sugar
Heat oven to 400. Beat butter, 1/2 cup powdered sugar and the vanilla in large bowl with electric mixer on medium speed, or mix with spoon.
Stir in flour and salt.
Stir in nuts.
Shape dough into 1-inch balls.
Place about 2 inches apart on ungreased cookie sheet. Bake 8 to 9 minutes or until set but not brown. Immediately remove from cookie sheet; roll in powdered sugar. Cool completely on wire rack. Roll in powdered sugar again.