Step 2: Melt the Butter and Cocoa
In a medium saucepan over low heat, melt the butter. Whisk in the cocoa powder until smooth and glossy. Remove from heat and allow the mixture to cool slightly.
Step 3: Mix the Cake Batter
Pour the warm cocoa mixture into a large mixing bowl. Add the granulated sugar and stir until well combined.
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
Gently fold in the flour and salt just until combined. Avoid overmixing to keep the cake tender.
Step 4: Bake the Cake
Spread the batter evenly into the prepared pan. Bake for 25–30 minutes, or until the center is just set and a toothpick inserted comes out with a few moist crumbs.
Step 5: Add the Marshmallows
Remove the cake from the oven and immediately sprinkle the marshmallows evenly over the hot surface. Return the pan to the oven for 2–3 minutes, just until the marshmallows puff up and begin to melt.
Remove from the oven and set aside while you prepare the frosting.
Step 6: Make the Chocolate Frosting
In a saucepan over medium heat, melt the butter. Stir in the milk and cocoa powder until smooth and heated through.
Remove from heat and gradually whisk in the powdered sugar until the frosting is smooth and pourable. Stir in the vanilla extract.
Step 7: Frost the Cake
While the cake and marshmallows are still warm, slowly pour the chocolate frosting over the top. Use a spatula to gently spread it, allowing it to seep into the marshmallow layer.
Step 8: Cool and Set
Let the cake cool at room temperature until the frosting sets. This allows the layers to settle into their signature gooey, fudgy texture.
Serving Tips
- Slice into generous squares for a true Southern-style dessert
- Serve slightly warm for extra gooey goodness
- Pair with vanilla ice cream or a cold glass of milk
Storage Tips
Cover the cake tightly and store at room temperature for up to 2 days, or refrigerate for up to 5 days. The cake stays moist and flavorful even after chilling.
Final Thoughts
Classic Mississippi Mud Cake is more than just a chocolate dessert—it’s a comforting, nostalgic recipe that brings people together. With its rich layers, simple preparation, and bold chocolate flavor, this timeless cake earns its place as a Southern favorite. One bite is all it takes to understand why it has been loved for generations.
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