Chocolate Mayonnaise Cake with Brown Sugar Frosting Recipe

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Everyone always asks what the secret ingredient of this cake is and they are definitely surprised when I tell them: Mayonnaise! It give it such a zippy flavor.—Susan Brauer, Aurora, Colorado
TOTAL TIME: Prep: 15 min. Bake: 30 min. + cooling
MAKES:9-12 servings
Test Kitchen Approved
TOTAL TIME: Prep: 15 min. Bake: 30 min. + cooling
MAKES: 9-12 servings


  • 2 cups all-purpose flour
  • 1 cup sugar
  • 3 tablespoons baking cocoa
  • 2 teaspoons baking soda
  • 1 cup water
  • 1 cup mayonnaise
  • 1 teaspoon vanilla extract
  • 1/4 cup butter
  • 1/2 cup packed brown sugar
  • 2 tablespoons milk
  • 1-3/4 cups sifted confectioners' sugar

Nutritional Facts

1 serving (1 piece) equals 416 calories, 19 g fat (4 g saturated fat), 17 mg cholesterol, 354 mg sodium, 60 g carbohydrate, 1 g fiber, 3 g protein.


  1. In a large bowl, combine flour, sugar, cocoa and baking soda. Add water, mayonnaise and vanilla; beat at medium speed until thoroughly combined.
  2. Pour into a greased 9-in. square or an 11-in. x 7-in. baking pan. Bake at 350° for 30-35 minutes or until cake tests done. Cool completely.
  3. For frosting, melt butter in a saucepan. Stir in brown sugar; cook and stir until bubbly. Remove from the heat and stir in milk. Gradually add confectioners' sugar; beat by hand until frosting is of spreading consistency. Immediately frost cake. Yield: 9-12 servings.
Originally published as Chocolate Mayonnaise Cake in Country Extra January 2002, p37

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Reviewed Nov. 10, 2015

"Made this cake when my kids were young and forgot about it for years. Uses stuff we normally have in the cabinet and is real easy and tastes great. The brown sugar frosting takes this cake to the next level. Yum."

Reviewed Jun. 28, 2010

"I have been baking this cake for some time with this recipe, my husband loves it and he normally does not like mayo!"

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