Some recipes sound questionable until you take the first bite. Chocolate Mayo Cupcakes are one of those recipes.
Mayonnaise in cake? Absolutely.
The result is an incredibly moist, rich chocolate cupcake with a tender crumb and deep cocoa flavor. No one will guess the secret ingredient—but everyone will ask for the recipe.
Featured in Baking in the American South by Anne Byrn, our June Cookbook Club Pick of the Month, these cupcakes are a delicious reminder that some of the best baking innovations come from making do with what you have.
If you've never baked with mayonnaise before, consider this your sign.
Why Put Mayonnaise in Chocolate Cake?
The answer goes back to wartime baking.
As Anne Byrn explains in Baking in the American South, mayonnaise appeared on World War II ration lists, and resourceful home bakers discovered it could replace ingredients that were harder to come by.
Since mayonnaise is made from oil and eggs, it naturally adds moisture and richness to cakes while creating an exceptionally tender texture.
The result? A chocolate cupcake that's soft, fudgy, and stays fresh longer than many traditional recipes.
What Makes These Cupcakes Special?
-
Ultra-moist texture thanks to mayonnaise
-
Rich chocolate flavor from cocoa powder
-
Easy, one-bowl-style preparation
-
Perfect for birthdays, bake sales, and celebrations
-
A fascinating piece of American baking history
And if you're Southern, there's a good chance the mayonnaise involved is Duke's.
Chocolate Mayo Cupcakes Recipe
Makes: 12 large cupcakes
Prep Time: 25–30 minutes
Bake Time: 20–25 minutes
Ingredients
For the Cupcakes
-
12 paper cupcake liners
-
2 cups (240 grams) unbleached all-purpose flour
-
1¾ cups (350 grams) granulated sugar
-
¾ cup (25 grams) unsweetened cocoa powder
-
2 teaspoons baking powder
-
½ teaspoon salt
-
¾ teaspoon baking soda
-
1 cup water
-
1 cup mayonnaise
-
2 teaspoons vanilla extract
For the Frosting
Choose one:
-
Peanut Butter Frosting
-
Three-Minute Chocolate Icing
(Recipes referenced in the cookbook.)
Instructions
Step 1: Prepare the Pan
Heat the oven to 350°F with a rack in the center.
Line a 12-cup muffin pan with paper cupcake liners.
Step 2: Make the Batter
In a large bowl, whisk together:
-
Flour
-
Sugar
-
Cocoa powder
-
Baking powder
-
Salt
-
Baking soda
In a separate bowl, combine:
-
Water
-
Mayonnaise
-
Vanilla extract
Pour the wet ingredients into the dry ingredients and stir until smooth.
Step 3: Bake
Divide the batter evenly among the cupcake liners, filling each about three-quarters full.
Bake for 20 to 25 minutes, or until the cupcakes spring back lightly when touched.
Allow the cupcakes to cool in the pan until they are easy to handle.
Transfer to a wire rack and cool completely.
Step 4: Frost and Serve
Spread your choice of frosting over the cooled cupcakes.
Serve immediately or store in an airtight container.
Why Mayonnaise Makes Better Cupcakes
Mayonnaise often gets treated as a novelty ingredient, but it's actually a baker's shortcut hiding in plain sight.
Because it's made with eggs and oil, it helps create:
-
A softer crumb
-
Better moisture retention
-
Richer flavor
-
Longer-lasting freshness
That's why mayo cakes have remained popular for generations—even after rationing ended.
Frosting Ideas
The cookbook suggests two classic pairings:
Peanut Butter Frosting
Rich, creamy, and slightly salty, peanut butter frosting turns these cupcakes into the Southern equivalent of a peanut butter cup.
Chocolate Frosting
For serious chocolate lovers, a glossy chocolate icing doubles down on the cocoa flavor and creates an old-school bakery-style finish.
Either choice is a winner.
Tips for Perfect Chocolate Mayo Cupcakes
-
Use full-fat mayonnaise for the best texture.
-
Don't overmix the batter once the wet and dry ingredients are combined.
-
Let cupcakes cool completely before frosting.
-
Store covered to keep them moist for several days.
-
Add chocolate sprinkles or chopped peanuts for extra texture.
A Little Southern Baking History
One of the things that makes Baking in the American South so enjoyable is the stories behind recipes like this one.
Chocolate Mayo Cupcakes aren't simply a clever baking trick—they're part of a larger tradition of resourceful Southern home cooks finding creative ways to make something special with everyday ingredients.
The recipe also highlights another Southern icon: Duke's Mayonnaise, which was created in Greenville, South Carolina, in 1917 and remains a pantry staple throughout the region.
Proof that sometimes the most unexpected ingredients become the most beloved.
Our June Cookbook Club Pick: Baking in the American South
Anne Byrn's Baking in the American South celebrates the recipes, traditions, and stories that have shaped American baking for generations.
From Hummingbird Cake and banana pudding to sweet rolls, biscuits, pies, and these wonderfully nostalgic Chocolate Mayo Cupcakes, every recipe offers a glimpse into the history behind the food.
That's exactly why it's our June Cookbook Club Pick of the Month.
And if you've never baked a chocolate cake with mayonnaise before, this recipe is the perfect place to start.