CHOCOLATE CHUNK PECAN PIE... CHOCOLATE CHUNK PECAN PIE Ingredients crust 1 1/2 cups King Arthur Perfect Pastry Blend or Unbleached All-Purpose Flour 1 tablespoon buttermilk powder, optional 1/4 teaspoon salt 1/4 teaspoon baking powder 3 tablespoons vegetable shortening 5 tablespoons cold butter 1 teaspoon white or cider vinegar 3 to 4 tablespoons ice water filling