INGREDIENTS
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1 (1-pound) sweet potato
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1/2 (14.1-ounce) package refrigerated pie dough (such as Pillsbury)
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Baking spray with flour
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1 cup 2% reduced-fat milk
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1/3 cup sugar
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1/2 teaspoon ground cinnamon
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1/2 teaspoon ground allspice
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1/4 teaspoon salt
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2 large eggs
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3 large egg whites, divided
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1 1/2 tablespoons unsalted butter, melted
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1/3 cup chopped pecans, toasted
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1 teaspoon water