1. Preheat oven to 275 F. Line cookie sheets with parchment paper.
2. Using an electric mixer, cream butter & sugar at low speed until it is smooth.
3. Beat in vanilla.
4. At low speed, gradually add the flour.
5. Mix in pecans with a spatula.
6. With floured hands, take out about 1 teaspoon of dough and shape into a crescent.
7. Continue to dust hand with four as you make more cookies. Place onto prepared cookie sheets.
8. Bake for 40 mins. When cool enough to handle but still warm, roll in additional confestioner's sugar. Cool on wired racks.
