INGREDIENTS
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5 ounces unblanched hazelnuts (1 cup)
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1/2 pound (2 sticks) unsalted butter, room temperature
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1/2 cup granulated sugar
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1 large egg
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1 teaspoon pure vanilla extract
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2 cups plus 2 tablespoons all-purpose flour, plus more for work surface
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1 teaspoon baking powder
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1 teaspoon ground cinnamon
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1/4 teaspoon ground nutmeg
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1/4 teaspoon table salt
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Confectioners' sugar, for dusting
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2/3 cup raspberry or cherry jam