Strawberry Shortbread Cookies

Name: Strawberry Shortbread Cookies
Prep time: 10 min
Cook time: 13 min
Total time: 23 min
Cuisine: American
Ingredients: 1/2 cup freeze-dried strawberries ((.5 ounces), plus more for garnish); 3/4 cup unsalted butter (softened (12 tablespoons)); 3/4 cup granulated sugar ((5.8 ounces)); 1/4 teaspoon kosher salt; 1 1/2 teaspoons vanilla extract; 1 1/2 cups all-purpose flour (spooned and leveled (6.3 ounces)); 1 egg white (to garnish, optional); Sparkling sugar (to garnish, optional)