Mars Bar Brownies!
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Easy and fudgey Mars Bar brownies! So chocolatey, so delicious!
Mars Bars brownies
It’s the time to have something so chocolatey, that you’ll want to make them again and again. These Mars Bar brownies is exactly that. So unbelievably chocolatey and fudgey they are on a next level. Are you intrigued yet?
Anyway. I thought I would start this recipe post off with a statement that makes you go these MUST be good, and then you’ll see the pictures and be like oh heyyy look at them, yes, they are amazing. And I really hope you guys did because I certainly did.
Mars bars and Milkyway bars (US)
From the beginning I must say that Mars Bars in the UK, are Milkyway bars in the US, so if some of my American readers are a little confused right now, just roll with a Milkyway instead. I finally found out why there is a different in name the other day (due to a family spat back in the day), and I was surprised that that was all it was.
Even so, Mars Bars are the one. They are slightly underrated in my opinion, but I do adore them. For those who have never experienced the wonder that is a Mars Bar… they are nougat and caramel, coated in milk chocolate. They are delightful.
Mars Bar recipes
When I was thinking about what chocolate bars I should bake with, I wanted to use one I hadn’t tried in a while. I’ve used Mars Bars four times on this blog already, my favourite time being my Mars Bar cheesecake, but it was so long ago!
These brownies came about because of my craving for something Mars Bar, and also because they were on offer in the supermarket I was in at the time so that made the bake cheaper. Always handy in my books. I couldn’t resist!
Dark chocolate
I went for a classic style brownie, that I have used in so many recipe posts now. And I will say it time and time again, PLEASE USE DARK CHOCOLATE IN THE BROWNIE MIXTURE. I don’t really care if you ‘don’t like dark chocolate’ it will make such a good brownie, and not too ‘dark’ a flavour, so PLEASE stick with it.
If you use milk chocolate, the mixture is so much thinner, and when people moan to me that their brownies didn’t bake properly, and say they switched to milk chocolate then that is why. It doesn’t work the same, and doesn’t make them nearly as fudgey. Dark chocolate is the best.
Brownie
The key really is to make the brownie mixture as thick as possible, and dollop on all your Brownie bits. When the caramel and nougat bakes, it’ll make little pockets of deliciousness for you to enjoy, and they are just a combination to behold. SO tasty!
Freezing Mars Bars
I realise its a faff, but freezing the Mars Bar bits before baking really is the best practice so they don’t explode everywhere completely and utterly, but its not completely essential. However, if you can, I would 100% recommend it!
These brownies are so fudgey, so moreish, and delightful. I really hope they live up to your expectations for my latest Mars Bar creation! Enjoy! X
Mars Bar Brownies!
Ingredients
Brownies
- 200 g dark chocolate
- 200 g unsalted butter
- 3 large eggs (or 4 medium)
- 275 g light brown sugar
- 100 g plain flour
- 50 g cocoa powder
- 300 g Mars Bar (chopped & frozen)
- 100 g milk chocolate chips (optional)
Optional Decoration
- 50 g milk chocolate (melted)
- Mars Bar pieces
Instructions
- Preheat your oven to 180C/160C Fan and line a 9x9" baking tin with parchment paper!
- Melt together your dark chocolate and unsalted butter until smooth in the microwave or in a bowl over a pan of simmering water. Leave to cool for a few minutes
- Using an electric whisk/stand mixer, whisk your eggs and sugar together for 5 minutes or so on high speed, or until the mixture has doubled in volume, is alot paler, and leaves a trail for a few seconds when you lift the whisk out.
- Pour in the chocolate/butter mix and fold through very carefully.
- Add in the flour and cocoa powder and fold through carefully again.
- Add in your frozen chunks of Mars Bar and chocolate chips and fold in. Pour the mixture into the tin and bake in the oven for 25-30+ minutes.
- Leave to cool in the tin, and then enjoy!
- To decorate your brownies if you fancy it... melt your chocolate and drizzle over the brownies, and add pieces of Mars Bar to each one! Set in the fridge, then chop up and enjoy!
Notes
- Please try and freeze the Mars Bar first as it'll work so much better!
- These will last for one week+!
- You can use caster sugar instead of the brown sugar, the brown sugar just works really well for the Mars Bar theme!
- If your brownies are taking much longer than stated to bake, your oven may have been the wrong temperature, or you over mixed your batter. Keep adding on 5 minutes till they're done and cover with foil if need be!
ENJOY!
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J x
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Hi Jane, could you freeze these brownies after baking? Would that work well?
Hey! Yes you definitely can!
Hey jane can you replace the mars bar with snickers and would you need to freeze the snickers? 🙂
Yes you can, and yes I would freeze them! x
Hi jade, I’m going to try this recipe for the first time I was just wondering how long you put your mars bars in freezer for?
Thanks
I would say at least an hour – you just want them to be frozen solid! x
Could you replace the mars with toffee crisps? If so would you also freeze these?
Thank you
Hey! Yeah that should be fine!
Hi,
I’ve only got a 10”x10” how would you suggest I alter the recipe?
Thanks 🙂
Hey! A 10″ tin is roughly 1.2x bigger – so you can either bake it as it is, but they’d be thinner, or increase the ingredients! x
Hi, I’ve not baked for long enough that’s are quite gooey in the middle. If o leave in the fridge will they firm up? Or should I try putting back in oven? I’ve already cooled and decorated Thanks
Hey! After they’ve been out of the oven for a while I personally wouldn’t recommend putting them back in especially as they are decorated – you could definitely refrigerate them overnight for example and it should help! X
Hi Jane, Another question from me (turning into a complete lockdown baker and your site is a massive help for some seriously good recipes). when you freeze the mars bars, do you put them in a container??
Hey! Ahh thank you so much!! And no I don’t – I usually just chop them up and shove them in the freeze on a plate or in a bowl! I do have a few shelves in my freezer just for my bakes though haha!
Literally just done this recipe, baked it for 35mins so hoping it’s alright as did 25mins and was still not baked. Cant wait to try it later.
Hi , can you use clover spread instead of the butter? Xx
That should be okay – melt it carefully with the chocolate and it should be okay!
Hi I have a 13” by 9” tin.. what would you suggest in regards to changing any measurements? Thank you!
I would use 1.5x the recipe!!
Hi, I made these and they are amazing! Do you know what I would need to do if I wanted to have a bit of a chewy edge? Is it just leave them in for longer? Or do I need to alter how I cook them?
Hey! Yes I would probably leave them in a bit longer, but you don’t want to over bake and get cakey!
Hi , if I wanted to make this recipe but have chunks of mars pressed into the surface of the brownies would you reccomend putting them in before, during or after cooking. Thanks, going to attempt for my dad for fathers day
Hey! I would probably say about 5 minutes towards the end you could push some chunks into the top! xx
I am going to attempt to make your gorgeous brownies tomorrow! But I want to do Oreo brownies, because you suggest freezing mars bars would you freeze oreos too beforehand?
Hey! No I wouldn’t bother freezing the oreos!
Fantastic recipe! Shared with. My friends and they all love them too!
Ahh yay!!
Hi Jane I’m crazy baking all your Blondies and Brownie recipes atm so needed new tins but could only find 8×8 or 9×12 which is what I bought as I wanted a bigger batch of these Mars Brownies. Could you kindly give me the amounts needed for this size pan pls. Thx loving all your recipes!
Hey! For a 9×12″ you want to use 1.3x the recipe, so about a third more – for an 8×8″ you’ll want to use 4/5 of a recipe! xx
Hi Jane
I’ve made a few of your recipes now and they are amazing! I want to make these but swap the mars bars for Rolo. Would you recommended using the same weight amount of rolos?
Thanks
Yes I would! I would also freeze the Rolos! xx
Is there a difference between light brown sugar and soft light brown sugar? If so, which should I use for this recipe?
For my recipes at least, light brown sugar is soft – the ones I buy just say ‘light brown sugar’!
Omg this brownie recipe is amazing!! I swapped the Mars for 200g of milkybar buttons and 250g of Rolos! They’re we’re amazing!!
Ooh yum!!
Omg…. I want to try this…. I’ve only got mini mars bars ….. what size should the chopped pieces of mars bar be
I usually cut them to about 1-2cm size pieces! x