Walnut stars - cookies

This cookie dough is conveniently made in a food processor, just as you might make pastry dough. The stars have a delicate crunch and lovely earthy-nutty flavour from toasted walnuts. (Using toasted nuts is important, so don’t skip this step!) The chocolate drizzle is icing on the cake . . . I mean cookie.
Ingredients

• 1 cup (about 4 ounces) walnuts
• ¼ cup granulated sugar
• 1½ cups all-purpose flour
• ½ cup confectioners’ sugar
• ½ teaspoon baking powder
• ¼ teaspoon salt
• 8 tablespoons (1 stick) chilled unsalted butter, cut into 8 slices
• 1 large egg yolk
• 1 teaspoon pure vanilla extract 1 to 2 tablespoons cold water
  

      Chocolate drizzle

• 3 ounces bittersweet or semisweet chocolate, chopped

Preparation
Cookie cutters needed:  star shapes that measure from about  1¾ to 2½ inches across the “arms”

1 Preheat the oven to 325°F. Spread the walnuts in a single layer on a small baking sheet. Toast in the oven for about 8 minutes or just until you start to smell them. Remove from the oven and cool to room temperature. Turn off the oven.

2 Pulse the cooled, toasted walnuts and the granulated sugar in a food processor until the nuts are finely chopped (not quite finely ground).  Transfer the mixture to a small bowl.

3 Add the flour, confectioners’ sugar, baking powder, and salt to the food processor. Pulse once to combine. Add the butter and pulse a few times until it’s chopped into tiny bits. Add the walnut mixture and pulse twice to combine. Add the egg yolk, vanilla, and 1 tablespoon of water and process just until the dough feels moist when pinched. Add ½ to 1 tablespoon more water, as needed, and pulse a few more times until the dough just starts to clump together. Turn the dough out onto a sheet of plastic wrap and gather into a ball. Press into a disk shape, wrap in plastic, and refrigerate until firm enough to roll out, at least 1 hour.

4 Preheat the oven to 350°F. Line a cookie sheet with parchment paper.

5 Roll out the dough on a lightly floured surface to a ¼-inch thickness. Use star cutters to stamp out cookies, arranging them about 1½ inch apart on the prepared sheet. Re-roll the scraps. Bake the cookies for 11 to 12 minutes or until light golden. Transfer to a rack to cool completely.

6 For the chocolate drizzle:  Melt the chocolate in a microwave-safe glass measuring cup or bowl in the microwave in 20 to 30-second bursts on medium power, stirring after each interval, until  melted and smooth. Let cool at room temperature for a few minutes.  Place the cookies close together, but not touching, on racks set over wax paper. Pour the chocolate into a small plastic bag or squeeze bottle. If using a bag, seal it and make a tiny cut in one corner. Working quickly, drizzle the chocolate in a zigzag pattern to make diagonal lines over the stars. Let the chocolate set completely before storing the cookies.

7 Store, layered between sheets of wax paper, in an airtight container for up to one week.