This Moist Chocolate Mayonnaise Cake is intensely chocolatey, incredibly soft, and stays moist for days thanks to the classic secret ingredient, mayonnaise. No butter, no oil needed. The texture is velvety, rich, and perfect with a smooth chocolate frosting. Fully tested, no alcohol, no pork ingredients, and ideal for any celebration.

Ingredients

For the Chocolate Cake

2 cups all-purpose flour

1 cup granulated sugar

1 cup brown sugar

¾ cup unsweetened cocoa powder

2 teaspoons baking soda

1 teaspoon baking powder

½ teaspoon salt

1 ⅓ cups warm water

1 cup mayonnaise

2 teaspoons vanilla extract

For the Chocolate Frosting

1 cup unsalted butter, softened

3 ½ cups powdered sugar

½ cup unsweetened cocoa powder

½ teaspoon salt

2 teaspoons vanilla extract

4–5 tablespoons milk

Instructions

Preheat oven to 350°F (175°C). Grease and flour two 8-inch cake pans.

In a large bowl whisk flour, granulated sugar, brown sugar, cocoa powder, baking soda, baking powder, and salt.

Add warm water, mayonnaise, and vanilla. Mix gently until smooth, do not overmix.

Divide batter between pans and bake for 28–32 minutes or until a toothpick comes out clean.

Cool cakes completely before frosting.

To make frosting, beat butter until creamy. Add powdered sugar, cocoa powder, salt, and vanilla. Add milk a little at a time until smooth and spreadable.

Frost the cooled cake with a thick, creamy layer on top and around the sides.

Tips

Mayonnaise must be full-fat for the best texture.

Warm water helps bloom the cocoa for deeper flavor.

Chill the cake 20 minutes before slicing for clean edges.

This cake tastes even better the next day.

Details

Prep Time: 15 mins

Cook Time: 30 mins

Total Time: 45 mins

Serves: 10–12

Calories: ~420 per slice