"A sour cream dough wraps up raisins and walnuts in cinnamon sugar for a sweet flaky Jewish cookie...."
INGREDIENTS
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1 cup (2 sticks) unsalted butter, softened
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3/4 cup sour cream
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1 egg, separated
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2 1/2 cups all-purpose flour, divided
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1/2 teaspoon kosher salt
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1/2 cup confectioners’ sugar
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3/4 cup granulated sugar
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3/4 cup raisins, roughly chopped
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1/2 cup walnuts, finely chopped
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2 teaspoons ground cinnamon