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Chocolate Mayonnaise Cake Recipe

4.8 from 144 reviews

This rich and moist Chocolate Mayonnaise Cake combines the unique use of mayonnaise and coffee for a deeply flavorful, tender crumb. Topped with a smooth and luscious chocolate buttercream frosting, this cake is a delightful treat that’s easy to prepare and perfect for any chocolate lover’s occasion.

Ingredients

Scale

Cake Ingredients

  • ¾ cup mayonnaise
  • 1 ¼ cup warm coffee
  • 2 large eggs, room temperature
  • 2 teaspoons vanilla extract
  • 2 cups all-purpose flour
  • 1 ½ cups granulated sugar
  • ¾ cup unsweetened cocoa powder (not Dutch process)
  • 2 teaspoons baking soda
  • ½ teaspoon baking powder
  • 1 teaspoon salt

Chocolate Buttercream Frosting Ingredients

  • 1 cup unsalted butter, softened
  • 3 cups powdered sugar
  • ½ cup unsweetened cocoa powder
  • 3 tablespoons milk (more as needed)
  • 1 teaspoon vanilla extract
  • ¼ teaspoon salt

Instructions

  1. Preheat and Prepare: Preheat your oven to 350°F (175°C). Lightly spray a 9 x 13 x 2-inch cake pan with nonstick cooking spray and set it aside.
  2. Combine Wet Ingredients: In a large bowl, whisk together the mayonnaise, warm coffee, eggs, and vanilla extract until well combined.
  3. Mix Dry Ingredients: In a separate medium bowl, whisk together all-purpose flour, granulated sugar, cocoa powder, baking soda, baking powder, and salt.
  4. Combine Wet and Dry: Add the dry ingredients mixture to the wet ingredients bowl. Gently whisk until the batter is fully combined without overmixing.
  5. Bake the Cake: Pour the batter into the prepared cake pan. Bake for 30 to 35 minutes, checking doneness by pressing the center lightly—it should spring back or a toothpick inserted should come out clean.
  6. Cool: Allow the cake to cool completely in the pan before frosting to ensure the frosting sets properly.
  7. Make Chocolate Buttercream Frosting: Beat the softened butter in a stand mixer bowl until fluffy. Gradually add powdered sugar, beating slowly at first then increasing speed to fully incorporate.
  8. Add Remaining Frosting Ingredients: Scrape down the bowl sides and add cocoa powder, milk, vanilla extract, and salt. Beat on medium-high speed until the frosting is smooth and spreadable. If too stiff, add milk one tablespoon at a time.
  9. Frost the Cake: Optionally chill the cake in the refrigerator or freezer for an hour before frosting. Dollop spoonfuls of frosting evenly on the cooled cake and spread smoothly with a spatula.

Notes

  • Using mayonnaise adds moisture and richness without oil or butter in the cake batter.
  • Ensure eggs are at room temperature for even mixing and better texture.
  • Warm coffee helps enhance the chocolate flavor and aids in a moist crumb.
  • Allow the cake to cool completely before frosting to prevent melting the frosting.
  • Adjust milk in frosting to reach desired spreading consistency.
  • Storing the cake covered in the refrigerator will keep it fresh for up to 3 days.

Keywords: Chocolate Mayonnaise Cake, Moist Chocolate Cake, Chocolate Buttercream Frosting, Easy Chocolate Cake, Coffee Chocolate Cake