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  • ¼ cup cocoa
  • 1 cup water
  • 1 Tbsp vanilla essence
  • 2 cups flour
  • 2 tsp baking soda
  • 1 cup caster sugar
  • ¾ cup HEINZ [SERIOUSLY] GOOD™ Mayonnaise


1. Preheat oven to 180°C. Mix the cocoa, hot water and vanilla essence together in a jug. Cool.

2. Sift the flour, baking soda and sugar in a bowl and make a well in the centre.

3. Combine the HEINZ [SERIOUSLY] GOOD™ Mayonnaise with the cocoa mixture and then pour in the well. Mix together gently.

4. Pour into a well greased and lined 20cm round cake tin.

5. Bake for 35-40 minutes until the cake is cooked when tested. Cool in the tin for 10 minutes before turning out onto a cake rack.

When cold, ice with your favourite chocolate icing, or with our Rich Chocolate Glaze, or simply dust with icing sugar to serve.

Rich Chocolate Glaze

Melt 125g dark chocolate with 1/4 cup cream together in the microwave for 1 minute. Stir to combine, cool a little and then pour over the cake and smooth out.


Tip: Add 1/4 cup finely chopped nuts. Add 1 Tbsp coffee powder with the hot water for a mocha version.

Rate and Review

18 Ratings Chocolate Mayonnaise Cake

Reviews (18)

Raeleen's Review | Rating

this case is so moist, dark and delicious (just don't tell the kids about the mayonnaise until after they have tried it lol) and is very easy to chocolate cake ever.

Trish's Rating
Michelle's Review | Rating

This cake is delicious - very moist and easy to make. Who would have thought of putting mayonnaise in a chocolate cake - GENIUS!

Lyn's Review | Rating

This is a fantastic cake.
I make a game out of it getting people to guess what is in the cake.

Anonymous Review | Rating


Kath Beauchamp's Review | Rating

Absolutely the easiest and moistest chocy cake ever.

Christine Fisher's Review | Rating

I baked and took this cake to work, told nobody what the ingredients were and they all raved over it. I printed it out and gave away 10 copies of it and it keeps going. Thanks. Loved it.

Cathy Leov's Review | Rating

I'm guessing the mayonnaise replaces eggs and oil, BUT - would it be possible to use yoghurt instead?
I don't want to waste all those ingredients if it has no chance of working

Michelle Lakeman's Review | Rating

I was wondering the same Cathy about using yoghurt instead of mayo, has anyone tried it?

Reply from Food in a Minute

Hi Cathy & Michelle, thanks for your questions. I'm afraid the cake wouldn't work with yoghurt as the mayonnaise provides the eggs and fat needed for the cake to work.

Sarah Hailes's Review | Rating

OMG AMAZING! This cake is truly, the most moist, delicious and rich chocolate cake I have ever made (& I've made a few as I have two young children!!)!! This is the only recipe I will use from now on - we ALL made 'all the right sounds' when taking that first, second and third bites :-)
One thing - I made the icing as per requirments, but it was VERY runny, even when cooled! The icing didn't look like the photo at all - I thought maybe I'd out too much cream, but used 1/2 cup as per instructions - also weighed out the 125g dark choco - what should/can I do to make it less runny please? Reduce the cream amount?? Please let me know as this cake is utterly heavenly!!

Reply from Food in a Minute Team

Hi Sarah, there is a mistake in the recipe and the amount of cream should be ¼ cup not ½ cup. We will amend the recipe. We are glad you enjoyed the cake and apologies for the mistake. Thanks

Kim's Review | Rating

So easy to make and it tastes great!
I wonder if you can omit the cocoa and to make it vanilla or add say orange zest to make it orange flavour?

Sarah's Review | Rating

Yumm! so tasty!, I didnt have any mayonnaise in the fridge so I used salad dressing lol and it turned out amazing

Doreen's Review | Rating

One of the best choc cakes ever. Very rich, moist and much enjoyed by all that have tried it. Will be another family favourite in our household.

Doreen's Review | Rating

Our best chocolate cake ever. Sooo moist, rich and scrumptious. All family and friends have been amazed that mayonnaise was in it but they all loved it too. Highly recommend.

Paia's Review | Rating

Can't wait to try this recipe - pre Google days an older family friend would make this and of course it was delicious, but REFUSED to share the recipe??
So glad to have found this - thanks for sharing!!!! :) I already know it's going to be great!

Merkava Mikaella's Review | Rating

I should try this !

Ali's Review | Rating

Can I use Heinz Seriously Good Mayonnaise Lite in this recipe please?

Joy's Review | Rating

This is my "go to" recipe for choc cake. However, I always use Eta mayonnaise. Such an easy cake to make and always moist.