INGREDIENTS
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2 1/2 cup all-purpose flour
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1 Tbsp sugar
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1 tsp salt
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3 Tbsp vegetable oil
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1 cup cool unsalted butter, cut into pieces (does not have to be ice cold)
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1/4 cup cool water
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2 tsp white vinegar or lemon juice
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4 cup fresh blueberries
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1 medium apple, peeled and coarsely grated
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1 cup sugar
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1 Tbsp lemon or lime juice
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1 tsp lemon or lime zest
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1/4 tsp ground cinnamon
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2 1/2 Tbsp cornstarch
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1 egg mixed with 2 Tbsp water, for brushing
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Turbinado or granulated sugar, for sprinkling