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Chocolate Mayonnaise Cake with Chocolate Buttercream Frosting

A creamy, moist chocolate cake that’s made with mayonnaise! Then, frosted with delicious buttercream frosting to make it even better.

Chocolate Mayonnaise Cake with Chocolate Buttercream Frosting

Ingredients Needed:

  • Flour
  • Unsweetened cocoa powder
  • Baking soda + Baking powder
  • Eggs
  • Sugar
  • Vanilla
  • Mayonnaise
  • Hot water
  • Butter
  • Powdered sugar
  • Milk
Chocolate Mayonnaise Cake with Chocolate Buttercream Frosting top view

Mayonnaise?! Yes. It’s not that weird, if you think about it. The basic ingredients of mayonnaise are eggs and oil. What are common ingredients in a cake? Eggs and oil. 👍

A few notes:

  • If desired, you can make this in a 9 x 13 baking instead. Simply increase your baking time to 35 minutes.
  • The amount of frosting for this will probably be a bit much for a 9 x 13 pan. If so, keep any leftover frosting in a covered container in the refrigerator.
  • You should also keep any leftover cake in a covered container in the refrigerator.
CHOCOLATE MAYONNAISE CAKE WITH CHOCOLATE BUTTERCREAM FROSTING from Table for Seven

Chocolate Mayonnaise Cake with Chocolate Buttercream Frosting

Erin Table for Seven
A creamy, moist, chocolate cake that’s made with mayonnaise! Frosted with a delicious chocolate buttercream frosting to make it even better.
4.50 from 8 votes
Prep Time 40 minutes
Cook Time 30 minutes
Total Time 1 hour 10 minutes
Course Dessert
Cuisine American
Servings 10
Calories 676 kcal

Ingredients
  

FOR CAKE:

  • 2 cups flour
  • cup unsweetened cocoa powder
  • 1 ¼ teaspoon baking soda
  • ¼ teaspoon baking powder
  • 3 eggs
  • 1 ⅔ cup sugar
  • 1 teaspoon vanilla
  • 1 cup mayonnaise store bought or homemade
  • 1 ⅓ cup hot water

FOR FROSTING:

  • 1 cup 2 sticks butter, softened
  • 1 teaspoon vanilla
  • 1 cup unsweetened cocoa powder
  • 4 cups powdered sugar
  • ¼ cup half/half

Instructions
 

FOR CAKE:

  • Preheat oven to 350 degrees. Grease two- 9 inch round cake pans
  • In a bowl, whisk together flour, cocoa powder, baking soda and baking powder. Set aside.
  • In a mixing bowl, beat eggs, sugar and vanilla until fluffy. Add in mayonnaise.
  • Gradually add in flour/coca mixture and hot water. Alternate between the two,beginning and ending with flour mixture.
  • Pour evenly into pans.
  • Bake for 30 minutes or until toothpick inserted comes out clean.Let cakes cool for 10-15 minutes before removing from pans.
  • Cool completely before frosting.

FOR FROSTING: 

  • Beat butter and vanilla until creamy. On low speed, gradually add in cocoa powder and sugar.
  • Add in half/half until desired consistency is reached.
  • Frost on cooled cake.

Notes

  • You can also use a 9 x 13 baking dish. Increase your baking time to 35-40 minutes or until toothpick inserted comes out clean.
  • Prep time includes cooling time.

Nutrition

Calories: 676kcalCarbohydrates: 111gProtein: 7gFat: 27gSaturated Fat: 14gPolyunsaturated Fat: 4gMonounsaturated Fat: 7gTrans Fat: 1gCholesterol: 101mgSodium: 502mgPotassium: 278mgFiber: 6gSugar: 81gVitamin A: 654IUCalcium: 43mgIron: 3mg
Tried this recipe?Let us know how it was!
Chocolate Mayonnaise Cake with Chocolate Buttercream Frosting pin
4.50 from 8 votes (8 ratings without comment)
Recipe Rating




Dee

Sunday 4th of August 2024

I've been making this cake for over 40 years and it's always wonderful. It's my youngest son's "go-to" cake when he's in the mood to bake something sweet and easy. He's been making it for a long time too. I got the original recipe from on old friend, now long since passed away. I thank her everytime I make it.

Hector

Monday 13th of April 2020

I've got a near-identical recipe from my food and nutrition classes back in the day. Real back in the day. The more things change...! Both are hands down two of the moistest, chocolatiest I've ever had. And a cinch to pull together. Total keepers Btw, no mayonnaise no probs. Sour cream also does the job.

Jasmine

Thursday 18th of July 2019

Very good cake, moist and delicious, not to mention super easy. I bake a lot, this is a keeper.