INGREDIENTS
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2 cups heavy cream
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2 tablespoons sugar
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1 tablespoon vanilla extract
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2 tablespoons powdered gelatin (two 1/4-ounce packets)
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1 cup whole milk
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1 pound bittersweet chocolate, finely chopped
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Nonstick cooking spray
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45 chocolate sandwich cookies, such as Oreo (about one 18-ounce package)
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1 stick (8 tablespoons) unsalted butter, softened
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Whipped cream, for serving