Thyme, Lemon, and Sea-Salt Shortbread
1 3/4 cups all-purpose flour
1/4 teaspoon salt
1 tablespoon freshly grated lemon zest
1 1/2 teaspoons finely chopped fresh thyme
1/2 cup (1 stick) unsalted butter at room temperature
1 large egg, lightly beaten
2 large egg yolks
1 tablespoon coarse sea salt
Stir the flour, salt, lemon peel, and thyme together in a medium bowl. With your fingertips, rub the butter into the dry ingredients until a coarse, crumbly mixture forms. Blend the lightly beaten egg, egg yolks, and water together. Reserve 1 tablespoon of the egg mixture for brushing.
Make a well in the center of the flour. Add the remaining egg mixture and blend together with your hands without kneading the dough together; the dough will look a bit crumbly. Turn the dough out onto a lightly floured work surface. Knead the dough together once or twice, just until it sticks together. Press the dough into a 1-inch disc, wrap in plastic film, and refrigerate until firm, about 1/2 hour.
Preheat the oven to 350°F and line the bottom of a baking sheet with parchment paper or a nonstick baking mat. Remove the dough from the refrigerator, unwrap, and place it on a floured work surface. Press the dough into a 6-by-5-inch rectangle. With a rolling pin, roll the dough into a larger 10-by-7-inch rectangle, about 1/4 inch thick. Cut the dough in half, forming two 5-by-7-inch pieces. Using a pizza wheel or sharp paring knife, cut into 1/2-inch-wide strips. Carefully place the cookies on the prepared baking sheet leaving a little room between each cookie. Brush the tops with the reserved egg mixture and sprinkle a little coarse sea salt on top. Gently press the salt into the surface of each cookie so it does not fall off. Bake until lightly browned, about 20 minutes. Transfer to a cooling rack and serve warm or at room temperature.
Lemon Crisps
1 1/2 cups sifted all-purpose flour
1/4 teaspoon baking powder
1/4 teaspoon baking soda
1/8 teaspoon salt
2 small lemons
5 tablespoons butter, softened
1/2 cup sugar, plus additional for dusting
1 large egg, separated
1/2 teaspoon pure vanilla extract
2 sheets parchment paper
Whisk flour, baking powder, baking soda and salt in a bowl. Grate zest from 1 lemon directly over another mixing bowl. Squeeze 3 tablespoons lemon juice into a third bowl; set aside. Add butter to lemon zest and beat with an electric mixer on medium until combined. Add sugar a little at a time; beat 1 minute. Add yolk (cover egg white with plastic wrap and refrigerate until ready to use) and half the flour mixture; beat on low until just combined. Add lemon juice, vanilla and remaining flour mixture. Beat until just combined. Form dough into a log about 8 inches long and 2 inches in diameter. Cover tightly in plastic wrap. Refrigerate 3 hours. Heat oven to 350°F. Line 2 baking sheets with parchment paper. Cut dough into 40 thin rounds and place on baking sheets. Whisk egg white with 1/4 teaspoon water; brush on top of cookies. Dust each with a bit of sugar. Bake 8 to 10 minutes or until edges are golden. Top with red or green Sprinkles