Ingredients

3 cups (spooned and leveled) all-purpose flour 

1 cup confectioners' sugar 

1 cup (2 sticks) cold unsalted butter, cut in pieces 

1/2 teaspoon salt 

4 large egg yolks 

1 teaspoon vanilla extract 

Egg wash, (optional): 1 large egg white, beaten with 2 teaspoons water 

Decorating sugar and sprinkles, (optional) 

Preparation

Place flour, sugar, butter, and salt in the bowl of a food processor; process until mixture is the texture of coarse meal.

In a small bowl, lightly beat egg yolks and vanilla; with motor running, add to food processor. Process just until a dough forms.