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Mississippi Mud Pie Recipe

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★★★★★

4.8 from 138 reviews

This decadent Mississippi Mud Pie combines a crunchy Oreo cookie crust with a rich, fudgy brownie layer, a velvety chocolate mousse, and a luscious chocolate whipped cream topping. Finished with a crispy cocoa-dusted Oreo cookie crumble, this pie is a chocolate lover’s dream dessert that’s perfect for special occasions or indulgent treats.

Ingredients

Scale

For the Crust:

  • 25 Oreo cookies, finely crushed
  • 6 tablespoons salted butter, melted

For the Brownie Layer:

  • 4 ounces bittersweet chocolate, chopped
  • 3 tablespoons salted butter, melted
  • 3 tablespoons vegetable oil
  • 2 tablespoons unsweetened cocoa powder
  • 2/3 cup light brown sugar
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 1/4 teaspoon salt
  • 3 tablespoons all-purpose flour

For the Cookie Topping:

  • 8 Oreo cookies, roughly crushed
  • 2 tablespoons powdered sugar
  • 1 tablespoon Dutch-processed cocoa powder
  • Pinch of salt
  • 2 tablespoons salted butter, melted

For the Mousse Layer:

  • 6 ounces milk chocolate, chopped
  • 1 cup cold heavy cream
  • 2 tablespoons Dutch-processed cocoa powder
  • 2 tablespoons powdered sugar
  • Pinch of salt

For the Chocolate Whipped Cream:

  • 1 cup heavy cream
  • 1/4 cup granulated sugar
  • 3 tablespoons unsweetened cocoa powder

Instructions

  1. Prepare the Crust: Preheat your oven to 325°F (165°C). Crush Oreo cookies finely using a food processor or by placing them in a ziplock bag and crushing with a rolling pin. Mix the crushed cookies evenly with melted salted butter. Press the mixture into a 9-inch pie plate, covering the bottom and sides evenly. Bake the crust for 12-15 minutes until set, then remove from the oven and allow it to cool completely.
  2. Make the Brownie Layer: In a microwave-safe bowl, combine bittersweet chocolate, salted butter, vegetable oil, and unsweetened cocoa powder. Heat in 20-second bursts, stirring between each, until the mixture is melted and smooth. Add brown sugar, eggs, vanilla extract, and salt, whisking until fully combined. Gently stir in flour until just incorporated. Pour this batter into the cooled Oreo crust. Bake for 25-30 minutes or until a toothpick inserted comes out slightly wet with batter; brownie temperature should reach 180°F (82°C). Let it cool completely before proceeding.
  3. Prepare the Cookie Topping: Roughly crush Oreo cookies in a ziplock bag. Toss them with powdered sugar, Dutch-processed cocoa powder, and a pinch of salt. Drizzle melted salted butter over the mixture and stir well to coat evenly. Spread this mixture on a parchment-lined baking sheet and bake at 325°F (165°C) for 10 minutes. Remove and allow the cookie topping to cool completely.
  4. Prepare the Mousse Layer: Melt the milk chocolate in a microwave-safe bowl by heating in 20-second intervals, stirring until smooth. Allow the melted chocolate to cool to between 90-100°F (32-37°C). In a large bowl, beat the cold heavy cream with cocoa powder, powdered sugar, and salt until soft peaks form. Fold about one-third of the whipped cream into the cooled melted chocolate, then gently fold in the remaining whipped cream until smooth and fully incorporated. Spread this mousse evenly over the cooled brownie layer. Chill the pie in the refrigerator for at least 3 hours or overnight to set.
  5. Make the Chocolate Whipped Cream: In a chilled mixing bowl, beat the heavy cream with granulated sugar and unsweetened cocoa powder until stiff peaks form. Spread this whipped cream over the chilled mousse layer. Sprinkle the cooled cookie topping evenly over the whipped cream. Chill the completed pie until ready to serve.

Notes

  • Ensure the brownie layer is not overbaked by checking with an instant-read thermometer; it should be slightly gooey inside for the best texture.
  • You can use a food processor to crush Oreo cookies quickly or place them in a sealed bag and use a rolling pin for manual crushing.
  • Let each layer cool sufficiently before adding the next to prevent mixing and maintain distinct layers.
  • For the best results, chill the pie overnight to allow the mousse to fully set and flavors to meld.
  • Use fresh heavy cream for both the mousse and whipped cream layers to achieve stable peaks and smooth texture.

Keywords: Mississippi Mud Pie, chocolate pie, brownie pie, chocolate mousse pie, Oreo crust, layered dessert

Find it online: https://nataliereeve.com/mississippi-mud-pie-recipe/