"Our approach to Mississippi mud pie was clear: When in doubt, add more chocolate...."
INGREDIENTS
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CRUST
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25 crushed chocolate wafer cookies (5 1/2 ounces), broken into coarse pieces 4 tablespoons unsalted butter, melted
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4 tablespoons unsalted butter, melted
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BROWNIE LAYER
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4 ounces bittersweet chocolate, chopped fine
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3 tablespoons unsalted butter
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3 tablespoons vegetable oil
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1 1/2 tablespoons Dutch-processed cocoa powder
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2/3 cup packed (4 2/3 ounces) dark brown sugar
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2 large eggs
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2 teaspoons vanilla extract
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1/4 teaspoon salt
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3 tablespoons all-purpose flour
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TOPPING
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10 chocolate wafer cookies (2 ounces)
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2 tablespoons confectioners' sugar
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1 tablespoon Dutch-processed cocoa powder
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⅛ teaspoon salt
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2 tablespoons unsalted butter, melted
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MOUSSE
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6 ounces milk chocolate, chopped fine
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1 cup heavy cream, chilled
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2 tablespoons Dutch-processed cocoa powder
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2 tablespoons confectioners' sugar
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⅛ teaspoon salt