Triple Chocolate Mayonnaise Cake
The secret ingredient that makes this cake so moist is Mayonnaise! Adding 3 kinds of chocolate makes it totally indulgent. With layers of chocolate cake, chocolate filling, and a luscious chocolate ganache topping, this Triple Chocolate Mayonnaise Cake is a chocolate dream come true. This old-fashioned vintage chocolate cake will satisfy any chocolate lover!

I was looking at the file photos of my unpublished recipes and lo and behold I found a few digital copies of this chocolate cake. I was surprised that I haven’t shared this yet.
I recall baking this for a kind friend and neighbor who helped us paint our house last year before we moved to Connecticut. I made him chocolate cake whenever he was at our place because I knew it is his favorite dessert.
I guess it must have been the crazy busyness of the move that I forgot about some recipes I made last year that have yet to grace this blog. Oh well, I am rectifying that mistake and sharing today this classic Southern chocolate cake before I forget about it again!

Being the chocoholic that I am, I added more chocolate to the mix – apart from cocoa powder you have extra chocolate goodness from the semi-sweet choco chips and to top it off – a dark chocolate ganache for the ultimate chocolate indulgence! Whether you wish to go all the way by adding all the chocolate flavors in there or you simply want a subtle chocolate taste, you will enjoy this moist cake!
This unique cake gets its incredible moisture and richness from an unexpected ingredient – mayonnaise. Don’t worry, you won’t taste any mayonnaise flavor. It simply makes the cake ultra-moist and velvety. The best part? It’s surprisingly easy to make with simple ingredients you likely already have in your pantry. Get ready to impress your friends and family with this showstopping chocolate mayonnaise cake recipe!

What Makes This Cake So Special?
While mayonnaise may seem like an odd ingredient in a cake, it’s actually a genius way to create an incredibly moist and rich chocolate cake. The oil and egg in mayonnaise work to tenderize the crumb and lock in moisture. You’ll be amazed at how light and velvety the texture is.
With three layers of chocolate – the cake itself, a luscious chocolate filling, and a poured chocolate ganache topping – this cake is a chocoholic’s dream. The depth of chocolate flavor is simply unbeatable. It’s the perfect cake for birthdays, holidays, or any time you need an over-the-top chocolate fix.

INGREDIENT LIST FOR Triple Chocolate Mayonnaise Cake
For the Cake
- Flour
- Unsweetened Cocoa powder
- Baking Soda – make sure it’s still fresh. Check the date.
- Baking Powder – same as above.
- Instant Coffee – this enhances the chocolate cake but may be left out if you don’t like coffee.
- A pinch of Salt – enhances the flavor of the cake so don’t leave out.
- Eggs – use room temperature eggs.
- Mayonnaise – use your favorite brand. A good quality mayonnaise would work best.
- Sugar
- Water
- Vanilla Extract
- Chocolate Chips
For the Chocolate Filling
- Use either your favorite store-bought chocolate frosting (I used one when I first made this cake) or your favorite homemade recipe, if you have a favorite one.)
- Here’s a homemade chocolate frosting recipe that we love to use for our chocolate cakes. You can adjust the amount and use only half since it’s just a filling.
- 1 cup (2 sticks) unsalted butter, softened
- 1/3 cup unsweetened cocoa powder,
- 1 tsp vanilla extract
- 1/8 tsp salt
- 3 cups powdered sugar, adjust the amount to taste
For the Dark Chocolate Ganache (use milk chocolate if that is preferred)
- Dark Chocolate (65-70%) – use eating chocolate (your favorite choice) because it tastes so much better than the baking ones. It makes a difference! If you don’t like dark chocolate – semi-sweet or milk chocolate should be fine, too. Use the chocolate you enjoy eating regardless of the sweetness level.
- Heavy Cream
- Honey, Corn, Agave or Maple syrup or your favorite liquid sweetener (adjust sweetness to taste)
HOW TO MAKE Triple Chocolate Mayonnaise Cake
Make the Cake Batter: Mix the dry ingredients, then add the wet ingredients like eggs, mayonnaise, sugar, water and vanilla. Fold in chocolate chips.



Bake the Cakes: Divide the batter between two greased cake pans and bake until a toothpick inserted in the center comes out clean.
Make the Chocolate Filling: Beat together butter, cocoa powder, powdered sugar, vanilla and salt until light and fluffy.
Assemble the Cake: Let the cakes cool completely, then spread the chocolate filling between the two cake layers.
Make the Chocolate Ganache: Gently heat the cream and chocolate together until melted and smooth. Top with Ganache: Pour the warm ganache over the top of the assembled cake, allowing it to drip down the sides.


Let Set and Enjoy!: Allow the ganache to set completely before slicing and serving this ultra-decadent chocolate cake.

Triple Chocolate Mayonnaise Cake (FAQs)
Can I taste the mayonnaise in the cake?
No, you cannot taste the mayonnaise at all! It simply adds incredible moisture and richness to the cake without any mayonnaise flavor.
Can I use a different type of chocolate for the ganache?
Of course! While dark chocolate is used in the recipe, you can substitute milk chocolate or semi-sweet chocolate chips if you prefer.
How should I store this cake?
This cake can be stored at room temperature for 2-3 days in an airtight container. You can also refrigerate it for up to 5 days.
Can I make this cake in advance?
A: Yes, you can bake the cake layers up to 2 days in advance. Allow them to cool completely, then wrap tightly and refrigerate until ready to assemble.
Do I need to use instant coffee powder?
A: No, the coffee powder is optional but it does enhance the chocolate flavor nicely. You can omit it if you prefer.
With its incredible moisture, rich chocolate flavor, and stunning presentation, this triple chocolate mayonnaise cake is sure to become a new favorite! Don’t be intimidated by the mayonnaise – just trust that it creates an unbelievably delicious chocolate cake. Give this unique recipe a try for your next special occasion!

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Triple Chocolate Mayonnaise Cake
Ingredients
For the Mayonnaise Cake
- 2 cups Flour
- 1/2 cup unsweetened Cocoa powder
- 1 1/4 teaspoon Baking Soda
- 1/2 teaspoon Baking Powder
- 1 teaspoon instant Coffee
- pinch of Salt
- 3 Eggs
- 1 cup Mayonnaise
- 1 cup Sugar
- 1 1/4 cup Water
- 1 teaspoon pure Vanilla Extract
- 1/2 cup Chocolate Chips
For the Chocolate Filling (Use either Store-bought or Homemade Frosting)
For the Homemade Chocolate Frosting
- 1 cup (8 oz) unsalted Butter, softened
- 1/3 cup unsweetened Cocoa powder
- 1 tsp Vanilla extract
- 1/8 tsp Salt
- 3 cups powdered sugar, adjust amount to taste
For the Store-bought Frosting
- 1 tub store-bought frosting/filling (like Betty Crocker or Hershey's) Use the filling/frosting when making the cake in 2 pans.
For the Dark Chocolate Ganache
- 4 oz Dark eating Chocolate 65-70%, broken into pieces (use milk chocolate if that is preferred)
- 4 oz Heavy Cream
- 1 Tablespoon Honey Corn, Agave or Maple syrup or your favorite liquid sweetener (adjust sweetness to taste)
Instructions
For the Mayonnaise Cake
- Preheat the oven to 350F. Butter 2 round cake pans (9-inch ones) and line with parchment paper.
- Mix together the flour, cocoa powder, baking soda, baking powder, coffee and salt in a bowl. Set aside.

- Add the eggs, mayonnaise, sugar, water and vanilla into the flour mixture. Stir until well-blended but do not overmix.

- Fold in the chocolate chips. Divide the batter evenly between the prepared pans.

- Bake in the preheated oven for 20-23 minutes or until a toothpick inserted in the center comes out clean. Oven temperatures vary so adjust the time accordingly. Make sure not to overbake.
- Cool the cakes in the pans for 10 minutes and then transfer to a wire rack. Cool the cakes completely before adding the chocolate filling/frosting in between the cakes and coating with the ganache.
For the Chocolate Filling (Use either Homemade or Store-bought Frosting
For the Homemade Chocolate Frosting
- In the bowl of an electric or stand mixer, beat together the butter, cocoa powder, vanilla, and salt until smooth. Add powdered sugar in two batches, beating until smooth after each addition and scraping the sides of the bowl as needed. Beat until frosting reaches desired consistency. It should be light, fluffy, and easy to spread.
- Once the cakes have cooled down completely, place one cake onto a serving platter and spread it with some chocolate filling/frosting. Place the other cake on top and then completely coat it with the dark chocolate ganache.
For the Dark Chocolate Ganache Topping
- Place the heavy cream, chocolate pieces and the liquid sweetener of your choice in a small saucepan. Melt the chocolate using low heat and by stirring until it becomes very smooth and shiny.

- Remove from the heat and immediately drizzle/pour it on the cake spreading it evenly to cover the entire cake.
- Allow the ganache to fully set before serving.
Notes

Last updated on May 27th, 2024 at 08:15 pm

Such a rich and decadent chocolate cake — you can’t even taste the mayonnaise! Delicious!
Yummy! This chocolate mayonnaise cake looks absolutely delicious and rich! My two chocolate lovers are going to love this! Definitely making this as soon as I can!
sorry but i would be omitted the coffee from this recipe and dont care if its enhance the chocolate, I tried cupcakes that someone put coffee in it and i didnt like it at all. cuz I not a coffee drinker at all and dont plan on putting it anything that I make.
To each their own – so if you don’t like it, simply omit it. No problem. I love it so I add it.
Well certainly don’t use it but it makes the cake
more flavorful. It takes away from this great cake if you do not use it though.
Is a 9×13” pan ok for this cake?
Yes though a slightly smaller one like 8×11 might work better. I’ve always made this with round cake pans that’s why. Simply adjust the baking time so the cake cooks properly.
mayonnaise cakes are good but I wouldn’t add the coffee to my recipes since I don’t drink it or like the texture of anything with coffee in it
Coffee enhances the flavor of chocolate and makes it more pronounced. You won’t even know the cake has coffee in it. Be that as it may, do what you think you like. Enjoy!
Hi do the chocolate chips inside the cake melt? Or when you bite into the cake, are there lumps of chocolate? Just wondering about this part! Looking at making this for an upcoming birthday 🙂 (MY birthday!) Thanks!
Some may melt but you’d still taste a few nibs here and there.
The directions call for lining the pans with parchment paper. How do you keep the parchment paper from distorting the sides of the cake as it is baking? Thank you!
Just do the bottom portion – just the exact size. Besides, it won’t matter because you’ll cover the cake with ganache anyway so any minor imperfection should get covered, if ever. Enjoy!
I count two different kind of chocolate- where is the third listed?
Chocolate chips in the cake batter, cocoa powder in the frosting and dark chocolate in the ganache.