The ultimate makeover: Chocolate brownies

The ultimate makeover: Chocolate brownies

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(149 ratings)

Prep: 25 mins Cook: 30 mins


Makes 12
Angela gives these rich treats a makeover, with a magic ingredient to reduce the fat content...

Nutrition and extra info

  • Freezable

Nutrition: per brownie

  • kcal191
  • fat11g
  • saturates3g
  • carbs23g
  • sugars16g
  • fibre1g
  • protein2g
  • salt0.28g
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  • 85g dark chocolate, 70% cocoa solids, chopped into small pieces
  • 85g plain flour
  • 25g cocoa powder
  • ¼ tsp bicarbonate of soda
    Bicarbonate of soda

    Bicarbonate of soda

    Bicarbonate of soda, or baking soda, is an alkali which is used to raise soda breads and full-…

  • 100g golden caster sugar
  • 50g light muscovado sugar
  • ½ tsp coffee granules
  • 1 tsp vanilla extract
  • 2 tbsp buttermilk
  • 1 egg



    The ultimate convenience food, eggs are powerhouses of nutrition, packed with protein and a…

  • 100g mayonnaise (I used Hellman's)


  1. Heat oven to 180C/fan 160C/gas 4. Pour enough water into a small pan to one-third fill it. Bring to the boil, then remove the pan from the heat. Put the chopped chocolate into a large bowl that will fit snugly over the pan without touching the water. Sit the pan over the water (still off the heat) and leave the chocolate to melt slowly for a few mins, stirring occasionally until it has melted evenly. Remove the bowl from the pan, then let the chocolate cool slightly.

  2. Meanwhile, lightly oil and base-line a 19cm square cake tin that is 5cm deep. Combine the flour, cocoa and bicarbonate of soda. Using a wooden spoon, stir both the sugars into the cooled chocolate with the coffee, vanilla and buttermilk. Stir in 1 tbsp warm water. Break and beat in the egg, then stir in the mayonnaise just until smooth and glossy. Sift over the flour and cocoa mix, then gently fold in with a spatula without overmixing.

  3. Pour the mixture into the tin, then gently and evenly spread it into the corners. Bake for 30 mins. When a skewer is inserted into the middle, it should come out with just a few moist crumbs sticking to it. If cooked too long, the mix will dry out; not long enough and it can sink. Leave in the tin until completely cold, then loosen the sides with a round-bladed knife. Turn out onto a board, peel off the lining paper and cut into 12 squares.

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Comments (233)

cakeaddict's picture

For the diet conscious out there, definitely worth a try! The mayo seems weird but it really works.
Evidently not going to be quite the same as full fat brownies which use loads of butter, but then you can't expect that!
I used yogurt instead of buttermilk, worked wonderful.

carrieanncat's picture

Best chocolate brownies I have ever made. And so easy. I've made three batches now. Took one lot to work and they went in an instant. The first batch I made for home and managed to ration myself to one (or maybe two) a day. They kept brilliantly in an airtight container. I will definitely be making some more maybe using some of the suggested changes.

tassie_nicole's picture

Absolutely Fantastic!!!!
I made them in silicone heart shape muffin cases and cooked for about 10 - 15 mins...they looked fab :)

mightybush's picture

Mine didn't rise. Did I overcook?

lizzimai2's picture

Really really good - no one at work could guess the 'secret ingredient'!! Will definatley be making them again

lauradavis's picture

Really great brownies!!! have made them twice, the first time only had sainsbury belgium milk choc and second time made with
Green and Blacks dark choc ....... my nine year old loved them
both. I think I prefered the ones with the milk quick and easy to make....... just make sure you don't overcook them.

bakingnut's picture

sorry forgot to rate the brownies!

bakingnut's picture

I made these last night and they were very popular at an event today especially as I told people that they were lower in fat content than usual.
I used a 28p plain value choc and reduced the sugar a bit as well as using some creme fraiche instead of the buttermilk, what a faff for 2 tblspns and thought they were delicious.
I also shaved appx 10 mins off the cooking time in a fan oven as I did not want to dry the mix and I used a silicone baking dish and the oven had been warm from a batch of gingerbread biscuits!
I plan to make the brownies again using halved hazlenuts for a bit of texture but overall they are worth doing again.
Thanks for all your comments.

mother_ship's picture

I made these with light mayo and fat-free yogurt instead of buttermilk, I also replaced the caster sugar with liquidised dates and they turned out very yummy for a relatively healthy treat. I've made them again today and threw in 100g of pecans and about the same of raisins and they were even better. Served warm with vanilla or coffee ice-cream they really would be lush!

elainegrima's picture

The came just like the picture - mayo is instead of butter i presume and you don t even taste it.

elainegrima's picture

Never thought they turn out so good. Excellent... cooking my second cake already as 1 is surley not enough!!

andydan's picture

Thank you for this recipe for the brownies, but I am intrigued by the addition of mayonnaise - please would you inform me as to what this does to the recipe and how good these brownies are??

looking forward to hearing from you,

jryser's picture

Couldn't wait to try these after reading all the comments. It's true, they are fantastic! Also used Hellman's light mayo and they are the best recipe I've tried for brownies. My usual one calls for 250g choc and 250g butter, won't be using that again! The only issue I have is that I find it hard to stop eating them......

lilbill's picture

absolutely gorgeous!! Made these twice now - both times using light mayo and 0% greek yoghurt, 2nd time had no cocoa so just used 80% dark chocolate - wonderful smell whilst cooking - these brownies don't hang around long!

georginaowens's picture

fabulouse, incredible, marvelous.... do i need to say more? Made for a family lunch and should have doubled u the portion because everyone wanted more!!!

cloclo's picture

Will be making these in the next school holidays. Can't wait, and will let you know how I get on.

1 question though, can I use milk chocolate (good quality), mixed with an equal amount of dark? Please help!!!

cjmaher's picture

I made these this morning admittedly in a bit of a hurry . They turned out fine if a bit lower than the picture but maybe because my tin was slightly bigger. I would not rave about them - they are pleasent but I have made nicer Brownies from other recipes

yerotsluap's picture

Really nice and straight forward. Felt strange putting mayo in a dessert but no one at work had any complaints when I shared them out

cakeanyone's picture

The recipe works well but there're tastier, moister recipes out there. Glad I tried this one (especially to try out the mayo!) but won't make these particular ones again.

hamishmum's picture

These are fab - you must try them. i followed the recipe to the letter & they turned out just like the picture. They are sooooo chocolatey & the smell whilst they were cooking was to die for.....!!


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