"Enjoy these blueberry turnovers when they're fresh out of the oven, while the pastry is crisp and the sweet filling is warm...."
INGREDIENTS
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2 cups fresh or frozen blueberries, divided
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2 tablespoons sugar
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1 tablespoon cornstarch
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2 teaspoons grated lemon zest
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2 tablespoons butter
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1 package (17.3 ounces) frozen puff pastry, thawed
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1 large egg
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1 tablespoon water
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1/2 cup confectioners' sugar
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1 tablespoon 2% milk