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plate with a slice of frosted chocolate mayo cake

Chocolate Mayonnaise Cake Recipe

Kara
You don't need eggs for this delicious chocolate cake, and there's a reason it's been popular for decades! Simple chocolate frosting makes it a perfect cake for chocolate lovers.
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Prep Time 15 minutes
Cook Time 25 minutes
Cooling Time 1 hour
Total Time 1 hour 40 minutes
Course Dessert: Cakes and Cupcakes
Cuisine American
Servings 20 servings
Calories 281 kcal

Equipment

Ingredients
  

Cake:

  • 2 cups all purpose flour (10 ounces)
  • 1 cup sugar
  • ⅓ cup unsweetened cocoa powder
  • 2 teaspoon baking soda
  • 1 cup mayonnaise
  • 1 teaspoon vanilla extract
  • 1 cup hot water (not boiling, just warm or hot tap water)

Chocolate Buttercream Frosting

  • ½ cup salted butter, softened to room temperature
  • ⅓ cup cocoa powder
  • ⅛ teaspoon salt
  • 3 cups powdered sugar
  • ½ teaspoon vanilla extract
  • 5 Tablespoons milk, more or less as needed

Instructions
 

  • Preheat your oven to 350 degrees. Spray a 9x13" pan with cooking spray.
  • In a large bowl, whisk together the flour, sugar, cocoa powder, and baking soda. Add the mayo, vanilla, and hot water. Whisk until smooth.
  • Pour the cake batter into the prepared pan. Bake at 350° for 25-30 minutes, or until a cake tester or toothpick comes out with no wet batter. (Moist crumbs are fine.)
  • Place the pan on a wire rack and let it cool completely.
  • For frosting: Beat the butter and cocoa powder until no lumps remain. Add the powdered sugar, vanilla, and 4 tablespoons of the milk. Beat until smooth, adding more milk as needed to get a creamy consistency.
  • Spread the frosting on the cooled cake. Cut into slices and serve, or cover with plastic wrap and store at room temperature.

Notes

  • For best results, use full-fat mayonnaise. I use Best Foods.
  • This cake works best in a metal cake pan; it tends to bake more evenly than when I use a glass pan. But if all you have is a glass pan, it's fine!
  • Leftover cake can be stored in an airtight container at room temperature for 3-4 days.

Nutrition

Calories: 281kcalCarbohydrates: 39gProtein: 2gFat: 14gSaturated Fat: 5gPolyunsaturated Fat: 5gMonounsaturated Fat: 3gTrans Fat: 0.2gCholesterol: 17mgSodium: 235mgPotassium: 67mgFiber: 1gSugar: 28gVitamin A: 155IUCalcium: 13mgIron: 1mg
Keyword mayonnaise cake
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