Double Pecan Thumbprints

Name: Double Pecan Thumbprints
Ingredients: 2 cups pecan halves, such as Fisher® Pecan Halves; ⅓ cup granulated sugar; 1 large egg white; 2 Tbsp. unsalted butter, room temperature; 2 tsp. espresso powder; ½ tsp. kosher salt; ¼ tsp. almond extract; 1¼ cups all-purpose flour; 1 tsp. kosher salt; ½ tsp. baking powder; ¾ cup (1½ sticks) unsalted butter, room temperature; ¼ cup granulated sugar; ¾ cup powdered sugar, divided; plus more for serving (optional); 1 large egg yolk; 1 tsp. vanilla extract or paste