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Mississippi Mud Pie

This Mississippi Mud Pie is a chocolate lover's dream featuring multiple decadent layers: a crunchy chocolate cookie crust, fudgy brownie layer, silky chocolate pudding, and fluffy whipped cream. Perfect as a make-ahead dessert for gatherings.
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Prep Time 40 minutes
Cook Time 35 minutes
Total Time 1 hour 15 minutes
Servings: 8 slices
Course: Dessert
Cuisine: American, Southern
Ingredients Equipment Method Notes

Ingredients
  

For the Crust
  • 1 1/2 cups chocolate cookie crumbs (like Oreo) finely crushed
  • 6 tablespoons unsalted butter melted
  • 2 tablespoons granulated sugar
For the Fudgy Layer
  • 1/2 cup unsalted butter
  • 3 ounces unsweetened chocolate chopped
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon pure vanilla extract
  • 1/4 cup all-purpose flour
  • 1 tablespoon unsweetened cocoa powder
  • 1/4 teaspoon salt
For the Pudding Layer
  • 3/4 cup granulated sugar
  • 1/4 cup unsweetened cocoa powder
  • 2 tablespoons cornstarch
  • 1 1/2 cups whole milk
  • 3 large egg yolks lightly beaten
  • 4 ounces semisweet chocolate chopped
  • 1 tablespoon unsalted butter
  • 1 teaspoon vanilla extract
For the Whipped Topping
  • 1 1/2 cups heavy whipping cream
  • 2 tablespoons powdered sugar
  • 1/2 teaspoon vanilla extract
Optional Garnishes
  • Chocolate curls, mini marshmallows, or toasted pecans

Equipment

  • 9-inch pie dish
  • Mixing bowls
  • Saucepan
  • Whisk
  • Measuring cups and spoons
  • Plastic wrap

Method
 

  1. Preheat your oven to 350°F (175°C).
  2. For the crust, mix the chocolate cookie crumbs, melted butter, and granulated sugar until thoroughly combined.
  3. Press the mixture firmly into the bottom and slightly up the sides of a pie dish. The back of a measuring cup works well for creating compact edges.
  4. For the fudgy layer, melt the butter with the chopped unsweetened chocolate in a saucepan over low heat or in the microwave in short bursts.
  5. Stir in the granulated sugar until dissolved, then allow the mixture to cool slightly.
  6. Beat in the eggs and vanilla extract to the chocolate mixture.
  7. In a separate bowl, whisk together the flour, cocoa powder, and salt, then fold this into your chocolate mixture just until combined.
  8. Pour this fudgy batter over your crust and bake until set but still slightly soft in the center, about 20-25 minutes.
  9. For the pudding layer, whisk together the sugar, cocoa powder, and cornstarch in a saucepan.
  10. Gradually add the milk while whisking continuously to prevent lumps.
  11. Cook over medium heat until the mixture begins to thicken.
  12. Temper the egg yolks by slowly adding a small amount of the hot mixture to them, then return everything to the pot.
  13. Continue cooking until thick and bubbling, then remove from heat.
  14. Stir in the semisweet chocolate, butter, and vanilla until smooth.
  15. Pour the pudding over the cooled brownie layer, cover with plastic wrap directly on the surface (to prevent a skin from forming), and refrigerate until set, at least 4 hours or overnight.
  16. Just before serving, whip the heavy cream with powdered sugar and vanilla extract until stiff peaks form.
  17. Spread or pipe the whipped cream over the chilled pie.
  18. If desired, garnish with chocolate curls, mini marshmallows, or toasted pecans before serving.

Notes

For best results, use high-quality chocolate as it significantly impacts the flavor. This dessert is perfect for making a day ahead, as it needs time to chill and set properly. Store leftovers covered in the refrigerator for up to 3 days. For a flavor variation, try adding a splash of coffee liqueur to the whipped topping or fold chopped pecans into the fudge layer for a nutty twist.