Chocolate Cake with Marshmallow Frosting


Chocolate Cake with Marshmallow Frosting is an utterly blissful cake that will make your tastebuds sing! It’s the perfect treat for any occasion! I mean you just can’t go wrong with that chocolate and marshmallow flavor combination.

This post is sponsored by Mirum however all opinions are 100% my own.

Chocolate Cake Marshmallow Frosting

Chocolate Cake with a Secret Ingredient

It’s perfectly rich and chocolatey, its fluffy, it’s moist, it has just the right amount of sweetness – oh and that topping! This cake is all the things you look forward to in a slice of cake and then some!

And there’s a secret ingredient that no on would suspect – mayonnaise!

Apparently this was a super popular recipe back in the day, my mom told me how much everyone loved it. So I’m not sure why I hadn’t heard of it until recently.

Better later than never though because I’m totally smitten!

Chocolate Cake Marshmallow Frosting

Ingredients Needed for Chocolate Cake

  • All-purpose flour
  • Unsweetened cocoa powder
  • Baking soda and baking powder
  • Eggs
  • Granulated sugar
  • Vanilla
  • Mayonnaise
  • Warm water

Ingredients Needed for Marshmallow Frosting

  • Egg whites
  • Granulated sugar
  • Cream of tartar
  • Vanilla extract

Chocolate Cake Marshmallow Frosting

How to Make Chocolate Cake

  • Preheat oven and spray baking dish.
  • Whisk dry ingredients.
  • In a separate bowl beat eggs sugar and vanilla 3 minutes, then blend in mayonnaise.
  • Mix in flour alternating with water.
  • Pour into prepared pan and bake until set. Let cool then frost.

How to Make Marshmallow Frosting

  • Fill a large saucepan with about 1 1/2-inches of water and bring to a simmer. Add egg whites, granulated sugar and cream of tartar to a heat proof bowl of an electric stand mixer.
  • Set bowl over saucepan and heat mixture, whisking constantly until it’s very warm, about 3 – 4 minutes.
  • Remove from heat and transfer bowl to electric stand mixer fitted with a whisk attachment.
  • Beat mixture beginning on low and increasing to high speed until stiff glossy peaks form, about 5 – 7 minutes.
  • Mix in vanilla.

Chocolate Cake Marshmallow Frosting

Of course for this recipe I used my go-to mayonnaise – Best Food’s Mayonnaise (AKA Hellmann’s Mayonnaise).

It’s rich and perfectly creamy and it’s a secret key ingredient in this cake. I always knew it was such a versatile ingredient but never thought to add it to cake! It just makes sense though when you check the ingredients label.

I love that I can purchase Hellman’s Mayonnaise and other Unilever foods in bulk at Sam’s Club. And while I’m shopping at Sam’s Club I love to use their Scan and Go App.

The Scan and Go App is just as it’s titled – it lets you scan the items while you shop and simplifies the whole checkout process.

With this service you can skip the check out lines! Simply proceed to the exit where a costumer service member will be waiting to scan the barcode on your app (which shows all of your purchases) and off you go! I love it!

Chocolate Cake Marshmallow Frosting

Sam’s Club also offers Club Pick Up where you can shop from home (order the items you want online) then someone at Sam’s Club will do all the shopping for you and you just show up to pick up your items hassle free. Genius! It leaves you with more time to do the things you love!

Or you can sign up for their subscription service to have the prodcuts you love shipped on a regular basis, a great way to stay on top of things!

Chocolate Cake Marshmallow Frosting

Now pull out that mayonnaise and get baking! I know it may sound weird but it just works, this is such a dreamy cake and you’ll have everyone savoring every last bite! You can even add your own unique twist and try this cake with a chocolate fudge frosting or another frosting of choice.

My whole family loved this cake and I’m sure it won’t be forgotten. I know my kids will be asking for this again and again.

I mean who wouldn’t love it? All good things start with chocolate!

Chocolate Cake Marshmallow Frosting

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Chocolate Cake with Marshmallow Frosting

4.41 from 5 votes

Rich and chocolatey cake topped with a light as air marshmallow frosting - that tastes like melted marshmallows! Such an irresistible cake and flavor combination!

Servings: 15
Prep Time 25 minutes
Cook Time 1 hour
Total Time 4 hours


  • 2 cups (250g) all-purpose flour (spooned and leveled)
  • 3/4 cup (65g) unsweetened cocoa powder (spooned and leveled)
  • 1 1/4 tsp baking soda
  • 1/4 tsp baking powder
  • 3 large eggs
  • 1 3/4 cups (360g) granulated sugar
  • 2 tsp vanilla extract
  • 1 cup + 2 Tbsp (246g) Hellmann's® or Best Foods® Mayonnaise
  • 1 1/3 cups (315ml) warm water
  • Chocolate shavings, for topping

Marshmallow Frosting

  • 4 large egg whites (make sure there's not even a drop of yolk!)
  • 1 cup (200g) granulated sugar
  • 1/4 tsp cream of tartar
  • 1 tsp vanilla extract


  1. Preheat oven to 350 degrees. Spray a 13 by 9-inch baking dish with non-stick cooking spray.

  2. In a medium mixing bowl whisk together flour, cocoa powder, baking soda and baking powder for 20 seconds, set aside.

  3. In a separate large mixing bowl, using an electric hand mixer set on high speed, beat eggs, sugar and vanilla for 3 minutes. Blend in mayonnaise.

  4. Mix half of the flour mixture into the sugar/mayonnaise mixture, mix in the water then mix in remaining flour mixture. Pour into prepared pan. 

  5. Bake in preheated oven until toothpick inserted into center comes out clean, about 34 - 38 minutes. Let cool completely on a wire rack (I like to cover about halfway through to seal in moisture). 

  6. Frost completely cooled cake with marshmallow frosting then top with chocolate shavings. 

For the frosting:

  1. Fill a large saucepan with about 1 1/2-inches of water and bring to a simmer. Add egg whites, granulated sugar and cream of tartar to a heat proof bowl of an electric stand mixer.

  2. Set bowl over saucepan (make sure it doesn't touch water) and heat mixture, whisking constantly until it's very warm (I let mine get to 150 degrees), about 3 - 4 minutes. 

  3. Remove from heat and transfer bowl to electric stand mixer fitted with a whisk attachment. 

  4. Beat mixture beginning on low and increasing to high speed until stiff glossy peaks form, about 5 - 7 minutes. 

  5. Pour in vanilla during the last 10 seconds of mixing. For best results serve within a few hours of preparing - keep frosting cold. 

  6. Recipe source: adapted from Hellmann's

Nutrition Facts
Chocolate Cake with Marshmallow Frosting
Amount Per Serving
Calories 348 Calories from Fat 117
% Daily Value*
Total Fat 13g 20%
Saturated Fat 2g 10%
Cholesterol 44mg 15%
Sodium 240mg 10%
Potassium 131mg 4%
Total Carbohydrates 52g 17%
Dietary Fiber 1g 4%
Sugars 37g
Protein 4g 8%
Vitamin A 1.3%
Calcium 1.9%
Iron 8.8%
* Percent Daily Values are based on a 2000 calorie diet.
Course: Dessert
Cuisine: American
Keyword: Chocolate Cake, Marshmallow Frosting
Calories: 348 kcal
Author: Jaclyn


  • Ayxan Mxmud: This looks like russian Bird’s Milk. July 17, 2018 at 1:05pm Reply

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