"If the dough starts to soften as you form these, pop it back in the fridge for ten minutes to firm back up...."
INGREDIENTS
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3/4 cup fresh (or frozen, thawed) blueberries
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3/4 cup fresh (or frozen, thawed) halved blackberries
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3 tablespoons sugar
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2 teaspoons finely grated peeled ginger
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2 teaspoons fresh lime juice
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1/2 teaspoon kosher salt, divided
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2 tablespoons all-purpose flour, plus more for surface
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1 large egg, beaten to blend
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1/4 cup heavy cream
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1 disk All-Purpose Pie Dough
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1 1/2 cups powdered sugar
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1 teaspoon vanilla extract