INGREDIENTS
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Nonstick cooking spray, for pan
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4 large eggs, separated
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3/4 cup granulated sugar
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1/4 teaspoon pure almond extract
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1/2 cup all-purpose flour (spooned and leveled)
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1/4 teaspoon salt
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Confectioners' sugar, for dusting
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Chocolate-Hazelnut Filling and Whipped-Cream Frosting
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1/2 cup sliced almonds, toasted