INGREDIENTS
•
2 cups all-purpose flour
•
1 cup confectioner's sugar
•
1/8 teaspoon salt
•
zest of 1 lemon
•
2 teaspoons freshly squeezed lemon juice
•
2 sticks unsalted butter, softened
•
1 teaspoon vanilla extract
•
1 egg, plus 1 egg yolk
•
1/4 cup sugar for dusting (optional)