INGREDIENTS
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2/3 cup husked hazelnuts
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2 1/2 tablespoons unsalted butter, plus more for greasing dish
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1/2 cup packed golden brown sugar
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2 tablespoons agave
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1 teaspoon fresh lemon juice
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Flour, for dusting
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1 teaspoon ground cinnamon
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1/4 teaspoon ground nutmeg
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One 8-ounce tube refrigerated crescent rolls
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1/8 teaspoon flaky sea salt, such as Maldon