"This tart has a creamy, almost puddinglike center. We used bittersweet chocolate so the ganache filling wouldn't be too sweet. Choosing a quality brand results in more well-rounded flavor and even silkier texture...."
INGREDIENTS
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28 chocolate wafers such as Nabisco Famous, finely ground in a food processor (1 1/2 cups)
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3/4 stick (6 tablespoons) unsalted butter, melted and cooled completely
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1/2 lb fine-quality bittersweet chocolate (no more than 60% cacao if marked), coarsely chopped
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3/4 stick (6 tablespoons) unsalted butter, cut into 1/2-inch cubes
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2 large eggs, lightly beaten
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1/2 cup heavy cream
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1/4 cup granulated sugar
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1/4 teaspoon salt
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1 teaspoon pure vanilla extract
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Garnish: unsweetened cocoa powder for sprinkling
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an 8-inch (20-cm) round springform pan