Dreamy Mississippi Mud Pie Layers

As seen in Sweet Treats to Satisfy Any Craving.

This mud pie delivers chocolate heaven in every bite. The dessert starts with a crunchy Oreo base, followed by a dense brownie middle, and topped with smooth chocolate mousse. Simple yet impressive, it's finished with bits of chocolate for extra crunch. Though it takes a bit of time to make, you'll be rewarded with an amazingly rich chocolate experience. Perfect for your special occasions or when you just need a serious chocolate fix.

Lindsey
Created By Lindsey
Last updated on Sat, 26 Apr 2025 16:02:36 GMT
A slice of chocolate cake with chocolate chips. Save Pin
A slice of chocolate cake with chocolate chips. | cookbing.com

My go-to showstopper has always been this indulgent Mississippi Mud Pie. It's got three incredible chocolate layers with an Oreo base that turns any regular dinner into something truly unforgettable.

Back when we first got married, I whipped this Mississippi Mud Pie up for my husband's birthday. After one taste, his jaw dropped and he insisted it become our official family celebration treat. We're still enjoying it at every special event a decade later.

Ingredients

  • Oreo cookies: they create both the base and garnish, giving you that amazing chocolatey foundation with extra crunch
  • Bittersweet chocolate: makes a deep, fudgy brownie layer that's not overly sweet
  • Milk chocolate: adds a smooth, velvety mousse component that works beautifully with the richer brownie underneath
  • Heavy cream: when whipped up right, it creates that dreamy, cloud-like texture in the mousse
  • Dark brown sugar: brings out those signature Southern molasses flavors throughout the pie

Step-by-Step Instructions

Prepare the Crust:
Grind Oreos into fine crumbs and mix with melted butter until it looks like wet sand. Pack it firmly into your pie dish and bake until you can smell it. That amazing smell means the cookies have released their oils, making your chocolate base even better.
Create the Brownie Layer:
Gently melt butter, oil, and chocolate together until silky smooth. The oil keeps everything nice and fudgy even after cooling in the fridge. Mix in your egg and sugar combo carefully, then add flour just enough to combine - don't overmix or your brownie will get tough. Bake until the edges firm up but the middle stays slightly gooey.
Prepare the Crunchy Topping:
Break Oreos into bigger pieces instead of tiny crumbs for more texture in each bite. Mix them with cocoa and butter to make little clusters that get nice and crunchy when baked. Pop them in the oven until they smell amazing, stirring once so they toast evenly.
Craft the Chocolate Mousse:
Getting the temperature right is super important here. Your melted chocolate needs to be between 90-100°F to mix properly with the whipped cream without making it fall flat. Combine everything using gentle figure eights to keep all those tiny air bubbles that make mousse so fluffy.
A slice of chocolate cake with chocolate chips. Save Pin
A slice of chocolate cake with chocolate chips. | cookbing.com

I learned the hard way about getting the mousse just right. After messing up several batches by adding cold cream to hot chocolate, I bought a cooking thermometer just for my baking projects. That simple tool took my desserts from homemade to restaurant-quality overnight.

Make-Ahead Options

This Mississippi Mud Pie actually gets better after sitting in the fridge. All those flavors blend together nicely while it chills, so it's perfect to make 24 hours before your party. The brownie part gets even more fudgy and the mousse sets perfectly with extra chilling time. Just add the crunchy bits a few hours before serving so they don't get soggy.

A slice of chocolate cake with chocolate chips. Save Pin
A slice of chocolate cake with chocolate chips. | cookbing.com

Serving Suggestions

This pie tastes best when it's cool but not straight-from-the-fridge cold. Take it out about 20 minutes before you're ready to serve so the flavors can wake up. Add a spoonful of lightly sweetened whipped cream on top for a pretty contrast against the dark chocolate. Want to make it extra fancy? Sprinkle some cocoa powder on the plate and add a few fresh raspberries or mint leaves to pop against the deep brown dessert.

Origin Story

This sweet treat comes from deep in the South, right along the Mississippi River. It got its name because it looks like the dark, rich mud you'd find on the riverbanks. The old-school versions were simple chocolate cakes topped with marshmallows, but this fancy update keeps the spirit alive while adding some extra wow factor. Southern families have handed down their own versions for years, often bringing them to Sunday dinners and holiday parties as a way to welcome guests.

Troubleshooting Tips

If your mousse appears grainy:
Your chocolate was probably too hot when you mixed it with the cream. Always let it cool to the right temperature first.
For clean slices:
Run your knife under hot water and wipe it dry between cuts.
The brownie layer should remain slightly fudgy:
Don't leave it in the oven too long or you'll lose the nice texture difference between layers.

Common Questions

→ What makes Mississippi mud pie unique?

The magic of mud pie comes from its three distinct chocolate elements working together. You get the crumbly cookie base, gooey brownie middle, and light mousse on top creating an unforgettable taste experience.

→ Can I use a premade crust for this dessert?

You can definitely grab a store-bought Oreo crust to save time, but making your own gives you better flavor and a fresher crunch.

→ How do I ensure the mousse layer is fluffy?

Use super cold cream when whipping and mix with a gentle hand when combining ingredients to keep all those lovely air bubbles intact.

→ How long does the pie need to chill?

Let it sit in your fridge for at least 3-4 hours, but leaving it overnight works even better for the perfect texture and taste.

→ Can I make this pie ahead of time?

It's actually best when made a day early. This gives everything time to set up properly and the flavors blend together beautifully.

→ How do I store Mississippi mud pie?

Keep it in your fridge wrapped in plastic or in a sealed container and it'll stay good for about 3-4 days.

Decadent Mud Pie

Rich mud pie featuring cookie base, brownie center, and smooth chocolate topping.

Preparation Time
60 Minutes
Cooking Time
60 Minutes
Overall Time
120 Minutes
Created By: Lindsey

Recipe Type: Desserts

Skill Level: Challenging

Type of Cuisine: American

Serves: 12 Portions

Diet Preferences: Suitable for Vegetarians

What You'll Need

→ Crust

01 16 chocolate sandwich cookies
02 1 tablespoon granulated sugar
03 4 tablespoons melted butter, cooled down

→ Brownie Layer

04 4 ounces dark chocolate, chopped small
05 3 tablespoons butter
06 3 tablespoons cooking oil
07 1 1/2 tablespoons unsweetened cocoa
08 2/3 cup packed dark brown sugar
09 2 large eggs
10 2 teaspoons vanilla
11 1/4 teaspoon salt
12 3 tablespoons plain flour

→ Topping

13 6 chocolate sandwich cookies
14 2 tablespoons icing sugar
15 1 tablespoon unsweetened cocoa
16 1/8 teaspoon salt
17 2 tablespoons melted butter

→ Mousse

18 6 ounces milk chocolate, cut into tiny pieces
19 1 cup chilled heavy cream, split
20 2 tablespoons unsweetened cocoa
21 2 tablespoons icing sugar
22 Tiny bit of salt

Step-by-Step Directions

Step 01

Warm your oven to 325ºF (163ºC). Crush 16 chocolate sandwich cookies in a food processor till you get fine crumbs. Mix in 4 tablespoons melted butter and blend well. Push the mix into a 9-inch pie dish. Pop it in the oven for 15 minutes until it smells good, then let it cool on a rack.

Step 02

Grab a microwave-safe container and put in 4 ounces dark chocolate, 3 tablespoons butter, 3 tablespoons cooking oil, and 1 1/2 tablespoons cocoa. Microwave at half power, giving it a stir now and then, until everything's melted (around 90 seconds). In a separate bowl, mix 2/3 cup dark brown sugar, 2 eggs, 2 teaspoons vanilla, and 1/4 teaspoon salt. Dump the chocolate mix into the wet stuff, then gently add 3 tablespoons of plain flour. Pour over the cookie base and bake for 15 minutes until the edges firm up. Let it cool for an hour on a rack, then stick it in the fridge for another hour.

Step 03

Set oven to 325ºF (163ºC). Put parchment on a baking tray. Break up 6 chocolate sandwich cookies into small chunks. Mix 2 tablespoons icing sugar, 1 tablespoon cocoa, 1/8 teaspoon salt, and 2 tablespoons melted butter with the broken cookies. Spread it all on the tray and bake for 10 minutes, giving it a stir halfway, until it smells good and gets crunchy. Cool it on a rack.

Step 04

Put 6 ounces milk chocolate in a microwave-safe bowl and melt at half power, stirring often, until smooth (90-120 seconds). Warm 3 tablespoons heavy cream in the microwave (15 seconds) till it reaches 105º-110ºF and mix with 2 tablespoons cocoa. Add 2 tablespoons icing sugar, a tiny bit of salt, and the rest of the cream (about 13 tablespoons). Beat using a stand mixer until soft peaks show up (roughly 2-3 minutes). Mix 1/3 of the whipped cream into the melted chocolate. Then carefully fold in what's left. Spread this mousse on top of the cooled brownie part.

Step 05

Sprinkle the cookie crumb mix on top of the pie. Put it in the fridge for 3-4 hours or leave it overnight before you serve it.

Helpful Notes

  1. Make sure the brownie part is totally cool before adding mousse or you'll mess up the texture.
  2. Use a food thermometer when making mousse to get the temps just right.
  3. This sweet treat tastes way better if you make it a day ahead.

Essential Tools

  • 9-inch pie dish
  • Food processor
  • Several bowls
  • Containers safe for microwave
  • Cooling rack
  • Stand mixer with whisk part
  • Baking tray with parchment paper

Allergen Warnings

Always review the ingredient labels for allergens or consult a healthcare professional with concerns.
  • Has dairy stuff (butter, cream, milk chocolate).
  • Contains wheat products (plain flour, chocolate sandwich cookies).
  • Got eggs in it.
  • Includes soy (found in chocolate).

Nutritional Info (Per Portion)

Nutritional values are approximations and shouldn’t be viewed as customized health guidance.
  • Calories: ~
  • Fat Content: ~
  • Carbohydrates: ~
  • Protein Content: ~