Preheat oven to 325 degrees F. Prepare a cookie sheet with parchment (if you smear a bit of butter on the pan it will hold the parchment better.)
In the bowl of an electric mixer, combine butter and sugar. Mix until fluffy. Stir in vanilla. Slowly add flour, mixing until a dough forms (see Image 1). Add pecans and mix until they are thoroughly combined.
Scoop dough in heaping teaspoons (see Image 2). Form into log, then turn edges down in crescent shape. Place cookies on parchment-prepared pan. Bake at 325 for 20 - 25 minutes. When the cookies are light brown on bottom and look 'set', they are done. Let cool on cooling rack. Sprinkle with powdered sugar if desired.
Makes 18 cookies.
clipped from: cookiebooky.blogspot.com