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Frosted Chocolate Mayonnaise Cake

IN my family this cake is also known as war time cake. I was a child during WWII but still remember my Mother making this cake as a treat, when eggs, butter and sugar were rationed. It’s rich and moist, a little goes a long way and it has been fail proof.
  • Total Time
    Prep: 15 min. Bake: 25 min. + cooling
  • Makes
    9 servings


  • 3/4 cup mayonnaise
  • 1 cup sugar
  • 1 teaspoon vanilla extract
  • 2 cups all-purpose flour
  • 1/4 cup baking cocoa
  • 2 teaspoons baking soda
  • 1/2 teaspoon salt
  • 1 cup water
  • 2 tablespoons butter, softened
  • 1-1/2 cups confectioners' sugar
  • 2 tablespoons baking cocoa
  • 2 tablespoons warm milk
  • 1 teaspoon vanilla extract
  • Dash salt


  • In a large bowl, beat the mayonnaise, sugar and vanilla until smooth. Combine the flour, cocoa, baking soda and salt; add to mayonnaise mixture alternately with water, beating well after each addition.
  • Pour into a greased 9-in. square baking pan. Bake at 350° for 25-30 minutes or until a toothpick inserted in the center comes out clean. Cool on a wire rack.
  • In a small bowl, beat butter until light and fluffy. Gradually beat in the confectioners' sugar, cocoa, milk, vanilla and salt. Frost cake. Store in the refrigerator.
Editor's Note
Reduced-fat or fat-free mayonnaise may not be substituted for regular mayonnaise in this recipe.
Reduced-fat or fat-free mayonnaise is not recommended for this recipe.
Nutrition Facts
1 piece: 435 calories, 18g fat (4g saturated fat), 14mg cholesterol, 547mg sodium, 66g carbohydrate (41g sugars, 1g fiber), 4g protein.

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  • cynthiatassell
    Nov 8, 2011

    Will try a glass pan next time as it over baked on the sides and dropped in the middle when I used a square metal pan.

  • tenatena
    Sep 17, 2010

    My grandma used to make mayonnaise cake for all of my birthdays, so thought I'd try this recipe. This was good, but I could taste the baking soda. I'd cut back on that. I also doubled the frosting, as I took the cake out of the pan and frosted the entire cake. It came out great.

  • elainemariekelley
    Jan 24, 2010

    awesome cake! very moist was eaten up in a day :) excellent