
Mississippi Mud Cake is that nostalgic dessert I turn to anytime I want to impress a group with minimal fuss. Its rich chocolate base, gooey marshmallow topping, and the crunch of toasted nuts never fail to steal the show at potlucks or holidays. While it may look elaborate, the process is delightfully simple and approachable for any home baker craving something fudgy and memorable.
My family first requested this for a birthday and since then it has made an appearance at every special gathering. Each time I see the top bubble with marshmallow, memories of laughter in our warm kitchen bubble up right along with it.
Ingredients
- All-purpose flour: Gives the cake structure Look for unbleached flour for best texture
- Unsweetened cocoa powder: Delivers that signature deep chocolate flavor Go for high-quality Dutch-process if available
- Baking powder: Helps the cake rise and keeps the crumb tender Check your powder is fresh for best results
- Granulated sugar: Sweetens and adds moisture Superfine sugar blends more easily if you have it
- Unsalted butter: Creates a rich batter and moist crumb Always choose butter with minimal added ingredients
- Large eggs: Bind everything together and create lift Room-temperature eggs mix in smoothly
- Vanilla extract: Enhances flavors and softens chocolate intensity Pure vanilla adds more depth than imitation
- Mini marshmallows: Provide that gooey classic topping Fresh marshmallows melt evenly and brown beautifully
- Pecans or walnuts: Add crunch and nutty aroma Toast before using for extra flavor Choose whole nuts with no splintering
Step-by-Step Instructions
- Prepare and preheat:
- Set your oven to the correct temperature 350 degrees Fahrenheit is key for even baking Grease a baking dish thoroughly to prevent sticking I prefer glass or ceramic for this cake
- Mix the dry ingredients:
- In a large bowl whisk together the flour cocoa powder baking powder and sugar Make sure there are no lumps The cocoa should be well distributed for even color and flavor
- Combine wet ingredients:
- Melt the unsalted butter until just liquid and let cool slightly In a separate bowl beat together the melted butter eggs and vanilla until the mixture is smooth No streaks of egg should remain
- Unite wet and dry components:
- Pour the wet mixture into the bowl of dry ingredients Stir gently with a spatula Do not overmix You want the batter to just come together for a dense yet tender cake
- Bake the cake:
- Spread the batter evenly into the prepared baking dish Pat down with the spatula for a uniform surface Slide into the oven and bake for 25 to 30 minutes Check doneness with a toothpick which should come out with a few moist crumbs
- Add marshmallows and return to oven:
- Immediately scatter mini marshmallows across the hot cake The top should be mostly covered Return to oven for about 5 minutes Keep a close eye Marshmallows should be puffy and lightly golden
- Finish with a chocolate glaze:
- For the finishing touch melt chocolate chips with a little butter in a microwave safe bowl Stir until silky Drizzle over the warm marshmallow layer and let it puddle at the edges

My favorite part is the chocolate glaze It reminds me of helping my mom drizzle chocolate over brownies as a kid Always save a few extra chips for sneaking a taste while you work
Storage Tips
Let the cake cool completely before storing Cut into squares and keep in an airtight container at room temperature for up to three days For longer freshness you can refrigerate it but always bring to room temperature before serving as the flavors intensify and the texture softens out of the fridge You can also freeze individual slices wrapped in wax paper then foil
Ingredient Substitutions
No nuts or have an allergy Use more marshmallows or a handful of chocolate chips Out of butter Try coconut oil for a slightly different but delicious cake Not a fan of marshmallows Sprinkle with mini chocolate chips or shredded coconut for another gooey finish

Serving Suggestions
For a premium treat serve slightly warm with ice cream or fresh whipped cream The cake pairs especially well with coffee or cold milk For fancier occasions I love to add a dusting of cocoa powder on top or a cherry beside each slice
Cultural and Historical Context
Mississippi Mud Cake is rooted in Southern Americana and believed to be named for its resemblance to the muddy banks of the Mississippi River Its layers symbolize the region’s love for indulgent simple desserts that bring folks together You will find versions in church cookbooks and family tables all across the South
Recipe FAQs
- → What type of nuts work best for this cake?
Pecans and walnuts are both classic choices, adding crunch and earthy flavor. You can substitute with your favorite nuts or omit them for a nut-free version.
- → How do I achieve a gooey marshmallow topping?
Sprinkle mini marshmallows over the baked cake and return it to the oven for about 5 minutes. The marshmallows should melt and turn lightly golden.
- → Can I make this cake ahead of time?
Yes, it can be baked in advance and stored in an airtight container. For best flavor, gently reheat before serving to refresh the marshmallow layer.
- → What are good mix-in alternatives to nuts?
Try adding chocolate chips, coconut flakes, or dried fruit for different flavor profiles and texture variations.
- → Does coffee enhance the chocolate flavor?
Adding a teaspoon of espresso powder intensifies the chocolate taste, making the cake even richer without adding noticeable coffee flavor.