"The pie crusts and the filling can be made ahead and assembled right before serving...."
INGREDIENTS
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1 refrigerated pie crusts (14.1 oz.)
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1 egg white, lightly beaten
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13/4 fresh blueberries, divided
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1/3 sugar
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2 cornstarch
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2 orange liqueur or orange juice concentrate
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3/4 ground cinnamon
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Pinch of salt
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4 plain Greek-style yogurt
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Mint leaves (optional)