Whoa, this chocolate Mississippi Mud Cake recipe is off-the-hook amazing, rich, decadent and delicious! Some folks call it a rocky road cake and sure, you can call it what you like.

Mississippi Mud Cake Recipe aka Rocky Road Cake Recipe in a casserole

Mississippi Mud Cake

Everyone in our test kitchen called it awesome! Rich and chocolate goodness! If anyone is craving chocolate cake, this one is right up their alley because it’s not only full of chocolate flavor, but also loaded with everything you would love about rocky road flavors. This is dessert comfort food at it’s best with every bite being memorable. It pairs wonderfully with a cold glass of milk.

Video of our amazing Mississippi Mud Cake aka Rocky Road Cake!

Tips for Sharing Mississippi Mud Cake

If you love rich decadent chocolate desserts, than this rocky road cake is wonderful after any meal. But it’s super perfect for Birthday parties, gatherings, game day or anytime you want to contribute a delicious chocolate dessert. This Mississippi mud cake is sure to make everyone smile with delight! This cake is rich and satisfying, you don’t need to make a double or triple batch unless you are feeding a ton of folks.

Mississippi Mud Cake Recipe aka Rocky Road Cake Recipe on a plate

How to serve this cake

It’s definitely rich so start small. Just cut the cake into small bite sized pieces and everyone can grab a little bite. If they want more, they can grab a second or third piece. But this cake goes a long way and probably two pieces is plenty! One thing we love pairing with this cake is a nice cold glass of milk. Yup! Milk and Mississippi mud cake go perfect together.

And by the way, if you happen to have any extras left over, then try a small piece for breakfast with your coffee. It’s for real folks! This cake and coffee are another great pairing. So it’s a cake that’s good for morning, noon and night.


Mississippi Mud Cake Recipe aka Rocky Road Cake Recipe on a casserole


More Dessert Recipes and Chocolate Recipes. This recipe was originally published in 2017 and re-published in 2019 with updated video.

Mississippi Mud Cake Recipe aka Rocky Road Cake Recipe it's amazing! | @bestrecipebox

Mississippi Mud Cake - aka Rocky Road Cake

Our recipe has a homemade cake recipe included in it. But you can also use your favorite boxed chocolate cake mix and it will turn out marvelous! Just bake your cake and then follow the instructions for the toppings and you have a quicker version of this popular cake that some people like to call, Rocky Road Cake! Makes one 9"x13" cake. 
3.86 from 7 votes

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For the CAKE

  • 1 cup (2 sticks or 225g) butter , melted
  • 1/2 cup (120ml or 45g) cocoa powder
  • 1 1/2 cups (360ml or 300g) sugar
  • 4 large eggs , slightly beaten
  • 1 teaspoon (5ml) vanilla extract
  • 1 1/2 cups (360ml or 190g) all-purpose flour
  • 1/2 teaspoon salt
  • 2 cups (480ml) chopped roasted pecans , walnuts or your favorite nuts
  • 10 ounces (about 4 cups or 283g) mini marshmallows
  • extra chopped nuts for topping (optional)
  • flakey sea salt , for topping (optional)


  • 1 lb. (3 3/4 cups or 455g) powdered sugar , sifted
  • 1/2 cup (120ml) milk
  • 1/2 teaspoon (3m) vanilla
  • 1/3 cup (80ml) cocoa powder
  • 1/4 cup (60g) butter , softened
  • additional milk (optional, for thinning out the frosting) 


  • Preheat oven to 350°F. Grease 9x13 inch baking pan with butter or non-stick cooking spray
  • Make the cake: In a large mixing bowl whisk together the melted butter and 1/2 cup of cocoa powder until well combined.  Mix in sugar, eggs and vanilla until blended. Stir in flour and salt.
    Stir in the nuts. Pour the batter into prepared pan.
  • Bake for 35 minutes or a toothpick comes out clean.
  • While the cake bakes, make the chocolate topping: Beat together the powdered sugar, milk, vanilla, 1/3 cup cocoa powder, and softened butter until smooth. Set aside.
  • Remove the cake from oven and sprinkle with marshmallows. Return to the oven and bake for 3 minutes. The marshmallows will soften and begin to melt. 
  • Directly after removing cake with marshmallows from oven, dollop the chocolate topping in small mounds over the cake. Gently swirl together the softened marshmallows and chocolate topping. Sprinkle with optional additional nuts and flakey salt. Allow to cool completely then serve. Enjoy!

Nutrition Information per Serving

Calories: 528kcal, Carbohydrates: 75g, Protein: 6g, Fat: 25g, Saturated Fat: 11g, Cholesterol: 85mg, Sodium: 236mg, Potassium: 162mg, Fiber: 3g, Sugar: 58g, Vitamin A: 530IU, Vitamin C: 1mg, Calcium: 36mg, Iron: 2mg

Want more Chocolate goodness? Try our Peanut butter mug cake or Million Dollar Bars Recipe here!