Caramel Hazelnut Linzer Cookies

Bahan-bahan (24 porsi)

• 2/3 cup (65g) hazelnuts (raw, roasted, chopped, or whole)*
• 2/3 cup (135g) packed light or dark brown sugar, divided
• 2 and 1/2 cups (313g) all-purpose flour (spooned & leveled), plus more for rolling
• 1/2 teaspoon baking powder
• 1 teaspoon ground cinnamon
• 1/2 teaspoon salt
• 1 cup (16 Tbsp; 226g) unsalted butter, softened to room temperature
• 1 large egg, at room temperature
• 1 and 1/2 teaspoons pure vanilla extract
• optional for dusting: 2 Tablespoons (16g) confectioners’ sugar
• 1 cup (200g) granulated sugar (make sure it’s labeled “pure cane”)*
• 6 Tablespoons (85g) unsalted butter, room temperature cut up into 6 pieces
• 1/2 cup (120ml) heavy cream, at room temperature
• 1/2 teaspoon salt