Spiced Hazelnut Linzer Cookies

These spiced hazelnut Linzer cookies are a delectable twist on the classic Austrian treat that is perfect for the holiday season. The buttery shortbread-style dough is punctuated with rich and nutty hazelnuts and infused with the warmth of cardamom, cinnamon, and a touch of cloves. The dough is cut into rounds and baked to golden perfection before being sandwiched together with a thin layer of jam. A dusting of powdered sugar lends a delicate sweetness and a festive look.

• ½ cup whole raw hazelnuts
• 3 cups all-purpose flour, plus extra for rolling out the cookies
• 1 ½ teaspoons ground cardamom
• 1 ½ teaspoons ground cinnamon
• ¼ teaspoon ground cloves
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 1 cup (2 sticks) unsalted butter, softened
• 1 cup granulated sugar
• 1 large egg + 1 egg yolk, at room temperature
• 1 tablespoon vanilla extract
• 2-3 tablespoons powdered sugar
• About ¾ cup jam or marmalade