1. Combine first 3 ingredients in a food processor; process until well blended. Add pecans, and pulse until finely chopped. Freeze mixture 30 minutes.
2. Place flour mixture and butter in food processor; pulse until mixture is crumbly. Add ice water, and process until dough forms a ball and leaves sides of bowl. Flatten dough into a disk between 2 sheets of wax paper. Wrap in plastic wrap, and chill 1 hour.