INGREDIENTS
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7 tablespoons unsalted butter
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1 1/2 cups graham-cracker crumbs (about 11 crackers)
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1 1/4 cups sugar
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2 pounds cream cheese, room temperature
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1 vanilla bean, split in half lengthwise
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4 large eggs, lightly beaten
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1 cup sour cream
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Pinch of salt
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6 ounces semisweet chocolate, chopped
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4 tablespoons heavy cream