These chocolate brownies with mayonnaise are rich, gooey, and deliciously simple. At first glance it seems an odd combination, but the main ingredients of mayonnaise are eggs and oil so it makes perfect sense.
Chocolate brownies are a winner in two ways: both delicious, and versatile. We have them as a snack on their own, or as pudding at the end of a meal with a scoop of ice cream. They’re simple to make, too. Compared to the split second timing and large dollop of luck involved with making a chocolate fondant, these chocolate brownies with mayonnaise are very straightforward, but still gooey, rich, chocolatey and delicious.
There are no real tricks required with this recipe. Mix the dry ingredients: the flour, cocoa powder, and baking powder. Whisking the eggs, vanilla, and sugar doesn’t call for fine judgement; just use electric hand mixer and after a couple of minutes the mixture will be a bit thicker than when you started – don’t worry too much about exactly how much.
If melting chocolate in the microwave, it does take a tiny bit of care; zap it for 20 seconds or so, see how it’s getting on and then give it another go. It’s better to have a few solid lumps of chocolate left that you can melt with a bit of stirring rather than overdo it with the microwave.
Then just fold all the ingredients together, pour into a lined cake tin and bake. The test for whether they’re done is the same as a cake – poke a cocktail stick or skewer into the middle, and the brownies are ready if it comes out clean. Allow the brownies to cool before cutting them into squares.
The surprise ingredient of mayonnaise does make a difference. The brownies don’t taste of mayonnaise, but adding it does result in a rich and gooey result, which is exactly what we’re looking for in this chocolatey treat. We take care to make sure that we use mayonnaise made with free range eggs: most of the quality brands are, so for us it’s worth spending that little bit more over a budget offering. This isn’t all you can do with mayonnaise, though. There are plenty of other unexpected ways a dollop can help around the house.
5 more unexpected uses for mayonnaise
- Removing a too-tight ring from a swollen finger. Massage mayonnaise into your hand, and the ring should slip off.
- Remove sticky adhesive residue left behind by labels or price stickers. Rub some mayonnaise over the sticky patch and remove with a clean cloth. This also works for tree sap if you’ve parked a car under a tree.
- Clean crayon marks from walls, if children have been a bit enthusiastic with their colouring in.
- As a manicure treatment to improve nail strength.
- Treating head lice. A non-toxic remedy: cover the hair with mayonnaise and leave overnight. Don’t use a low fat mayonnaise here. Use a disposable shower cap while sleeping to protect the bedding, and wash out in the morning.
After all that, you’ll need a treat. Time for another brownie!
These chocolate brownies with mayonnaise are rich, gooey, and deliciously simple. At first glance it seems an odd combination, but the main ingredients in mayonnaise are eggs and oil so it makes perfect sense.
- 1/3 cup plain flour (40g)
- 1 tsp baking powder
- 4 tbsp cocoa powder (25g)
- 1 cup plain chocolate broken into small pieces (140g)
- 3 medium eggs
- 1 cup caster sugar (225g)
- 1 tsp vanilla essence
- 1/3 cup Mayonnaise (110g)
- 1/2 cup walnuts - chopped (optional - 50g)
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Lightly grease a 23cm square cake tin and line with baking paper.
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Sift the flour with the baking powder and cocoa. Put the chocolate into a heat proof bowl over a saucepan of hot water and leave until melted (alternatively, microwave on medium power, stirring occasionally, until just melted).
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In a large bowl, whisk the eggs with the sugar and vanilla until slightly thickened.
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Whisk in the chocolate mixture. Fold in the flour mixture, mayonnaise and walnuts.
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Pour into the prepared tin and bake in a preheated oven at 160°C for about 30-35 minutes or until a skewer inserted in the centre comes out clean.
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Leave to cool in the tin before cutting into squares.
Why not pin for later?
I love your new look – and the menus are great too
The title of this post made me start and then I remembered I have made chocolate mayonnaise cake – it doesn’t seem right and yet if you break down the ingredients of a good mayo you find there isn’t much in there that you wouldn’t put in a cake so I am not surprised it works in brownies
Thanks! I am still tweaking the look and have some new graphics coming too for my title bar.
Still need to work on my catagories so they are complete!
How interesting – would never have thought to make brownies with mayo! I have a friend who makes an interesting chicken pie dish with Hellmans – you’d never guess!
If you just think of mayonnaise as a dressing, it is limited. If you consider the ingredients, it all makes sense that it is a great addition to recipes.
Bananas sound a good idea… I found the mayo brownies a bit dry for me, had they said it was cake I would have said “nice cake” but presented as brownies they didn’t quite do it for me.
I find the trick with brownies is not over cooking, as it can make them dry. That fine line of staying gooey and turning to a cakey consistancy.
Wow… The Mayo brownies looks real yumm….
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I do like a good brownie, and these didn’t disappoint.
All brownies are yummy!
You can’t fault a brownie, always a good treat.
It’s amazing how the word mayonnaise sounds weird and yet works so well. I once ate a cake with mayonnaise and loved it ! So I know this is going to be good. Can’t wait to try.
The key is breaking down the ingredients in the mayonnaise and it all makes sense.
Wow, these look amazing. Am going to give this Recipe a go at the weekend I think!
A delicious treat, hope you got to enjoy them.
Those brownies look absolutely perfect! I love the thought of using mayonnaise in them! Can’t wait to give them a try. :)
Such a good way of making them delicious and moist.
These brownies look so moist and delicious…I can’t wait to try.
They are very moreish, be warned.
I always thought plain-old-chocolate-brownies were pretty much already the best they can be, but adding mayo? Yup! That should do it! Brownie points for this awesome brownie!!!
Brownie points for brownies, has got to be a good result, thank you.
These mayo brownies look so rich and gooey! They’re so easy to dress up too making them a versatile dessert option. Interesting list of other uses for mayo! Didn’t know that you could use mayo for those things!
I love finding out other uses of everyday things, often am quite surprised myself.
WOW! I would never in a million years imagine using mayo to make brownies! That’s amazing! They look so delicious, I am so going to try these!
It is one of those things that makes perfect sense when you consider the ingredients, but perhaps never really considered.
These look decadent, Helen! And mayo is used a lot in cakes, so why not brownies? YUM!
Thank you Christina. It works really well, a good result.
Yes please, these look delicious!!
I can promise you, you won’t be disappointed Kara.
I love brownies and these look amazing. I would never have thought of adding mayonnaise but I have to try it now
Worth giving a go, the results were delicious.
I would never have thought of using mayonnaise in brownies but that is an inventive way of using mayonaise! I like that it makes it rich and gooey mmm!
A lovely consistancy and really delicious.
Interesting idea and definitely one I’d like to try so I’ve pinned to make later, I’ll let you know how I get on!
Hope you enjoy them when you try, would be good to hear back. Thank you.
I would never have thought of using mayonnaise in chocolate brownies before. They do look delicious though x
Works really well, gives a lovely consistancy.
Tasty looking brownies. I would love to try them. Maybe this weekend.
Hope you get a chance to make them, certainly worth it.
I’m not sure about the manicure treatment! But I can see myself trying this recipe – love brownies!
I think most of us would be dubious about a manicure in mayonnaise or indeed putting in our hair, but there must be something good about it. Highly recommend for the brownies though, that I can say.
I need to pin this, it sounds very very tasty!
Hope you get a chance to try them out yourself, very tasty indeed.
I would never have even dreamed of using mayo in brownies, but yes, it makes sense that it would actually work! Thanks for those interesting uses for mayo as well – very useful!
Its quite an amusing list.
I’m a massive fan on Mayo but never in my life thought about it going with chocolate. I’m super intrigued though and can’t wait to try it as I bet it’s delish.
it is such an easy way to make brownies