Mississippi Mud Cake
The BEST Mississippi Mud Cake!
Rich, fudgy chocolate cake topped with gooey marshmallows and warm chocolate frosting—this dessert is pure chocolate heaven. It’s easy, decadent, and always a crowd favorite. 🍫✨
🛒 You’ll Need:
For the cake 🍰
✔️ 2 cups all-purpose flour
✔️ 1 1/2 cups granulated sugar
✔️ 1/2 cup light brown sugar, packed
✔️ 3/4 cup unsweetened cocoa powder
✔️ 2 tsp baking powder
✔️ 1 1/2 tsp baking soda
✔️ 3/4 tsp salt
✔️ 3/4 cup canola or vegetable oil
✔️ 2 eggs
✔️ 1 tsp vanilla extract
✔️ 6 Tbsp milk
✔️ 1/3 cup sour cream
✔️ 1 cup boiling water
For the topping ✨
✔️ 1 (10.5-ounce) package mini marshmallows
For the frosting 🍫
✔️ 1/2 cup butter
✔️ 6 Tbsp milk
✔️ 3 heaping Tbsp unsweetened cocoa powder
✔️ 1 tsp vanilla extract
✔️ 3 cups powdered sugar
Instructions:
1️⃣ Preheat oven to 350°F and lightly grease a 9x13-inch baking pan.
2️⃣ In a large bowl, combine 2 cups flour, 1 1/2 cups granulated sugar, 1/2 cup brown sugar, 3/4 cup cocoa powder, 2 tsp baking powder, 1 1/2 tsp baking soda, and 3/4 tsp salt.
3️⃣ Add 3/4 cup oil, 2 eggs, 1 tsp vanilla, 6 Tbsp milk, and 1/3 cup sour cream. Mix until combined.
4️⃣ Reduce speed and carefully pour in 1 cup boiling water. Beat on high speed for 1 minute.
5️⃣ Pour batter into prepared pan.
6️⃣ Bake for 38–45 minutes, or until a toothpick inserted in the center comes out clean.
7️⃣ Remove cake from oven and sprinkle mini marshmallows all over the top, covering it completely.
8️⃣ Return to the oven for 3–5 minutes, until marshmallows are slightly puffed and melted.
9️⃣ Let cake cool completely before adding the frosting.
For the frosting:
🔟 Melt 1/2 cup butter in a small saucepan over medium-high heat.
1️⃣1️⃣ Add 6 Tbsp milk and 3 heaping Tbsp cocoa powder and whisk well. Cook for 2–3 minutes, stirring constantly.
1️⃣2️⃣ Remove from heat and stir in 1 tsp vanilla and 3 cups powdered sugar. Use an electric mixer to make it smooth.
1️⃣3️⃣ Drizzle warm frosting over the cooled cake.
1️⃣4️⃣ Refrigerate for about 30 minutes, or until the frosting is set.
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Find the full recipe at Tastes Better From Scratch (link in bio!)
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If you’re a fan of rich, chocolatey desserts, Mississippi Mud Cake is one of those classic recipes that never disappoints. What makes this cake stand out is the combination of moist, fudgy chocolate cake paired with a generous layer of toasted mini marshmallows and a luscious chocolate frosting. From my experience, the key to achieving the perfect moist texture lies in carefully folding in the boiling water and using sour cream, which adds a subtle tang and helps keep the cake tender. One tip I’ve found helpful is to not skimp on the marshmallows on top. The mini marshmallows puff up beautifully in the last few minutes of baking, creating that signature gooey and slightly toasted layer that contrasts wonderfully with the dense cake beneath. It’s best to watch the marshmallows closely during those final minutes to ensure they don’t overbrown. When making the chocolate frosting, whisking the cocoa powder into the melted butter and milk over medium heat allows the flavors to meld perfectly before mixing in the powdered sugar. This step helps avoid lumps and results in a smooth, rich frosting that spreads easily. Also, letting the cake cool completely before frosting is essential to prevent melting or sliding. Another thing I loved about this recipe is how it uses pantry staples like cocoa powder and basic baking ingredients, making it accessible without needing specialty items. Plus, it can easily be doubled for larger gatherings. For an extra touch, you can sprinkle some chopped nuts or chocolate chips over the marshmallows before the final bake, adding a delightful crunch. This dessert always gets rave reviews at potlucks and family dinners—like a warm hug for chocolate lovers! Overall, this Mississippi Mud Cake recipe captures that old-fashioned chocolate indulgence that’s both comforting and impressive. If you try it, make sure to share your own twists or tips—it’s such a fun cake to experiment with!
