INGREDIENTS
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6 tablespoons unsalted butter
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4 pounds Pink Lady and/or Granny Smith apples, peeled, cored, cut into 1-inch pieces
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2/3 cup (packed) dark brown sugar
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3 tablespoons all-purpose flour
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1 teaspoon finely grated lemon zest
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2 tablespoons fresh lemon juice
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1 tablespoon vanilla extract
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2 teaspoons ground cinnamon
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1 1/2-inch piece ginger, peeled, finely grated
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1/2 teaspoon kosher salt
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1 package frozen puff pastry (preferably Dufour), thawed, cut into irregular 1-inch pieces
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Granulated sugar (for sprinkling)
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2 pints vanilla ice cream