Chocolate Mayonnaise Sheet Cake

Total Time
Prep 0 mins
Cook 0 mins

Making cake with mayonnaise is an old tried and true method, but many folks are surprised when they first learn about it. Never fear, it really does work! And deliciously so, I might add... :)

Ingredients Nutrition


  1. Preheat oven to 350 degrees F.
  2. In a bowl, sift together the flour, cocoa, baking soda, and salt; set aside.
  3. In the bowl of an electric mixer, combine the mayonnaise and sugar and beat at medium until blended.
  4. With mixer running, gradually add the cold water and vanilla.
  5. Add dry ingredients to mayonnaise mixture, beating until well blended, about 2 minutes.
  6. Pour batter into buttered 13x9x2-inch baking pan.
  7. Bake in 350 degree F oven 40 minutes or until cake tests done.
  8. Cool in cake in pan on rack.
  9. Meanwhile, begin your Fluffy Chocolate Frosting: In a saucepan over medium heat, combine the brown sugar, half and half or light cream, and butter.
  10. Cook over medium heat, stirring constantly, until mixture comes to a boil; let boil 1 minute, then remove from heat.
  11. Stir in the chocolate chips and vanilla.
  12. Beat with an electric mixer at high speed until the consistency is fluffy and is spreadable.
  13. When cake has cooled, frost it with the Fluffy Chocolate Frosting.
  14. Cut in squares and enjoy! :)
Most Helpful

SUPERB cake! The cake part is so light, it almost melts in your mouth and the frosting is rich & chocolaty. I'm not a big cake fan and have rarely baked them over the years, but I'll make an exception for this one. It's particularly nice, compared to the everything-but-the-kitchen-sink type of cakes that always seem to be served. I used all-purpose flour (didn't have unbleached) and doubled the frosting (my husband is a chocolate&frosting maniac) and it came out great. I only had to bake it 30 minutes by my oven. So very glad you found and shared this recipe!

Kat in Texas February 01, 2003

Excellent cake and very easy to make. I used a cream cheese icing rather than the one listed with the recipe because...well...we like cream cheese icing. I made a layer cake in addition to the 9x13 sheet cake called for by the recipe. The baking time for the layer cake was 28 minutes. It was 40 minutes for the sheet cake.

Mark H. November 15, 2004

my my!!!!!! it was awesome! i didn't have regular mayo but i did have kRAft's mayo-and-sweet-chilli sauce mix instead. i used that..and it was chilli taste watsoeva.

Larie August 18, 2003