Description
Mississippi Mud Pie is a decadent layered dessert featuring an Oreo cookie crust, rich fudgy brownie layer, and a smooth chocolate mousse topped with a crispy Oreo crumble. It combines multiple textures and intense chocolate flavor in one impressive pie, perfect for special occasions or chocolate lovers.
Ingredients
Scale
Oreo Crust
- 16 Oreo cookies
- 1 tablespoon granulated sugar
- 4 tablespoons unsalted butter, melted and cooled
Brownie Layer
- 4 ounces bittersweet chocolate, finely chopped
- 3 tablespoons unsalted butter
- 3 tablespoons vegetable oil
- 1 ½ tablespoons unsweetened cocoa powder
- ⅔ cup dark brown sugar, firmly packed
- 2 large eggs, room temperature
- 2 teaspoons vanilla extract
- ¼ teaspoon salt
- 3 tablespoons all-purpose flour
Topping Crumble
- 6 Oreo cookies
- 2 tablespoons powdered sugar
- 1 tablespoon unsweetened cocoa powder
- ⅛ teaspoon salt
- 2 tablespoons unsalted butter, melted
Chocolate Mousse
- 6 ounces milk chocolate, chopped fine
- 1 cup heavy cream, very cold (divided into ½ cup and ½ cup)
- 2 tablespoons unsweetened cocoa powder
- 2 tablespoons powdered sugar
- Pinch of salt
Instructions
- Prepare the Crust: Preheat your oven to 325°F (163°C). In a food processor, pulse 16 Oreo cookies into fine crumbs. Add 1 tablespoon granulated sugar and 4 tablespoons melted butter, then pulse until combined. Press this mixture firmly into the bottom and up the sides of a 9-inch pie plate. Bake for 15 minutes until fragrant, then cool on a wire rack.
- Prepare the Brownie Layer: In a microwave-safe bowl, combine 4 ounces chopped bittersweet chocolate, 3 tablespoons unsalted butter, 3 tablespoons vegetable oil, and 1 ½ tablespoons cocoa powder. Microwave at 50% power, stirring frequently, until melted and smooth (about 1 minute 30 seconds). In another bowl, whisk together ⅔ cup dark brown sugar, 2 large eggs, 2 teaspoons vanilla extract, and ¼ teaspoon salt until smooth. Add the melted chocolate mixture to the egg mixture and whisk until combined. Stir in 3 tablespoons all-purpose flour until just incorporated. Pour the batter into the cooled Oreo crust. Bake at 325°F (163°C) for about 15 minutes, until the edges are set and a toothpick inserted in the center comes out with a thin coating of batter. Cool on a wire rack for 1 hour, then refrigerate for at least 1 hour until completely chilled.
- Prepare the Topping: In a food processor, pulse 6 Oreo cookies into coarse crumbs. Add 2 tablespoons powdered sugar, 1 tablespoon cocoa powder, and ⅛ teaspoon salt, then pulse to combine. Drizzle in 2 tablespoons melted butter and pulse until the mixture resembles wet sand. Spread the crumb mixture evenly on a baking sheet. Bake at 325°F (163°C) for about 10 minutes until fragrant. Allow to cool completely.
- Prepare the Mousse: Melt 6 ounces milk chocolate in a microwave-safe bowl at 50% power, stirring frequently, until smooth. Let cool until the chocolate reaches about 85°F (29°C). In a chilled mixing bowl, whisk ½ cup heavy cream until soft peaks form, then refrigerate. In another bowl, whisk the remaining ½ cup heavy cream, 2 tablespoons cocoa powder, 2 tablespoons powdered sugar, and a pinch of salt until thickened. Fold the cocoa cream mixture gently into the melted chocolate until combined, then fold in the whipped cream carefully until no streaks remain. Spread the chocolate mousse evenly over the chilled brownie layer.
- Assemble and Chill: Sprinkle the cooled cookie crumble topping evenly over the mousse layer. Refrigerate the pie for at least 4 hours until fully set before serving.
Notes
- Ensure eggs are at room temperature to help create a smooth brownie batter.
- Melting chocolate at 50% power and stirring frequently prevents burning and allows for smooth melting.
- Chilling the pie for several hours improves the texture and flavor development.
- Use a pie plate with 9-inch diameter for best results and proper layering.
- To speed chilling, place pie in the coldest part of your refrigerator or briefly freeze before serving.
- Prep Time: 30 minutes
- Cook Time: 40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
