The ultimate makeover: Chocolate brownies

The ultimate makeover: chocolate brownies

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(168 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
    Dark chocolate soup pots with double cream in spoons

    Dark chocolate

    dahk chok-o-let

    Dark chocolate means the shiny, dark-reddish brown treat produced from the cacao bean, theobroma…

  • 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
    Buttermilk pancake mixture in bowl with whisk



    There are two types of buttermilk. Traditional buttermilk is a thin, cloudy, slightly tart but…

  • 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, questions and tips

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23rd Apr, 2020
Nice flavour but definitely bake for less than 30 mins (probably more like 20 mins). Seeing as only 85g of chocolate was used I chopped up the rest and combined it with the flour. Next time I would probably add nuts as well!!
7th Apr, 2020
This recipe is amazing. I easily turned into a gluten free/ diary free treat, I used gluten free flour with a bit of xantham gum and replaces buttermilk with soya milk and lemon juice. I used lighter than light mayo, so the fat content becomes even lower. As someone on a low to no fat restricted diet in lockdown these treats are a life saver!
3rd Sep, 2017
Made these brownies for picnic. Delicious. I only had a larger tin 19cm x 29cm but thought I'd give it a go. Baked them for 20mins, they looked more sponge like than usual brownie but were soft and squidgy when eaten. Yummy. I used 50% chocolate and green and blacks cocoa powder which has a really good flavour.
VetBakes's picture
16th Aug, 2017
These went down very well indeed! I switched the recipe up a little bit by reducing the sugar by 40g and using 85% dark chocolate to try and make them a little more chocolatey. I also added chocolate chips to one half of the mixture and a handful of frozen raspberries to the other half. Only 4/5 as although they were yummy they weren't quite the best gooey sticky chocolatey brownies I've ever made
18th Dec, 2016
Best brownie recipe I've ever tried, and my housemates have now started using mayonnaise for cooking too. These always disappear in half an hour even though I make double the amount suggested here. Great recipe!
goodfoodteam's picture
11th Aug, 2016
Thanks for your question. The answer is yes, you can freeze these brownies. We mark all our freezable recipes with a blue star, you can find this underneath the Facebook and social medial symbols at the top of the recipe. If it's not there, it's not freezable. Hope this helps!
3rd Jul, 2016
Never made chocolate brownies before, but tried this recipe yesterday, and wanted to add my voice to the rating of 5 stars. It's absolutely divine. Kids love it, tried it with some vanilla ice-cream yesterday, totally delicious! Will be making a couple of batches for a gathering of 23 I'm cooking for at the end of the month, and plan to serve it with ice cream. Thank you for this recipe, I'm sure I'll be making it again and again.........! PS was easy to make too!
12th Apr, 2016
Made this in super quick time this evening. The boys were horrified when I put the mayonnaise in and were determined not to like them but unfortunately they did. So I have to share them. Also used light mayo as recommended and used xylitol in place of sugar. They taste delicious.
28th Jan, 2016
I made these for the first time yesterday, they were perfect! It did feel weird putting mayonnaise in, but hey ho, they taste goooood! I didn't have the right size tin but threw caution to the wind and used a 30cm x 9cm x 3cm tin and it worked great. 30 mins was perfect for me. Although they aren't gooey on the inside, they are so soft and moorish. I will probably put choc chunks or nuts in next time to add a bit of crunch.
24th Oct, 2015
Great recipe but made to look a lot more difficult than it actually is with such a long winded explanation of every step! Instead of 185 of dark chocolate, I used 100g of dark chocolate, 40g of milk chocolate and added a spoonful of golden syrup when I added the chocolate and butter to eggy mousse mix. I also added 1tsp of baking powder to the flour. Instead of 50g of milk and 50g of white choc I used 100g of terrys milk chocolate orange....they were so good, my hubby and his friends were bickering over who would get the last one at a poker night!


29th Oct, 2019
Which Hellman's mayonnaise should be used, the LIGHT one with 26 % fat or the LIGHTER THAN LIGHT one with 2,9 % fat?
goodfoodteam's picture
2nd Nov, 2019
Thanks for your question. Full-fat mayonnaise was used in this recipe. It's only a small quantity and will give a more rich and moist result than a reduced fat alternative.
Louise McDowell's picture
Louise McDowell
5th Jul, 2018
How could this be turned into a vegan recipe? I’d love to make them for my friend as really enjoyed the batch I’ve just made!!
goodfoodteam's picture
5th Jul, 2018
Thanks for your question. We haven't tested a vegan version of this recipe so can't give you specifics, However, why not try the following as an alternative?
23rd Mar, 2017
This recipe states 85g chocolate in the ingredient list but comments mention using 150g + in the comments. Has the recipe changed??
goodfoodteam's picture
29th Mar, 2017
Thanks for your question. 85g is the correct quantity.
17th Jul, 2016
is this suitable for freezing?
goodfoodteam's picture
9th Aug, 2016
Thanks for your question - yes it is! We signpost all our freezable recipes with a blue star, you'll find it just under the Facebook and other social media symbols at the top of the recipe. If there's no blue star then the recipe isn't freezable. Hope this helps!
11th May, 2014
I'm not sure about using mayonnaise will it make that much difference to the taste without it? Thanks
3rd Jul, 2016
My advice would be to try it, then decide. I'm confident you won't have anything to worry about!


18th Jan, 2017
Highly recommend this recipe, I used a milk chocolate bar instead of dark, I had a 110g Cadbury bar so I multiplied other ingredients by 1.3 just to even it out. I also recommend making two batches as it makes 12 small brownies as my family went through them extremely quickly.
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