INGREDIENTS
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Ingredients
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1 1/4 cups low-fat buttermilk
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2 large eggs, separated
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1 disk refrigerated or homemade pie dough
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1 stick unsalted butter, melted
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1 1/4 cups granulated sugar
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3 tablespoons all-purpose flour
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1 tablespoon fresh lemon juice
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1/4 teaspoon finely grated lemon zest
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1/4 teaspoon freshly grated nutmeg
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1/4 teaspoon salt
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Confectioners' sugar, for dusting