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
© Jane’s Patisserie. All images & content are copyright protected. Do not use my images without prior permission. If you want to republish this recipe, please re-write the recipe in your own words and credit me, or link back to this post for the recipe.
Hi, love these brownies, my sister introduced me to them and this page! About to try some of your other brownie receipes soon!
I noticed some use light brown sugar and some use caster sugar. What difference does using one over the other make?
Cheers 🙂
It’s just a bit of taste difference – brown sugar has a slightly more caramel flavour! x
I love making these brownies
How long can you freeze them for once they have been baked
Thank you
Hiya! You can freeze these for up to 3 months! Enjoy! x
Any tips to how is best to chop the mars bar? Ir before freezing it or once frozen? Thanks ☺️
Probably easier before! x
Hi, I had to cook it quite a bit longer (I think because o had a 20cm square tin so it was thicker than your images). This meant that all the mars pieces completely disappeared. How thick/deep should the mix be when you put it into the tray?
Hiya! Unfortunately this recipe is based on the size of the tray rather than depth – 9×9 is the best to use! Hope this helps! x
Afternoon
You say dar chocolate, is that cooking chocolate or any dark chocolate from the supermarket ?
Thanks
Steve
Hiya! I tend to use supermarkets own – any will be fine just along as it is at least 70%! x
Sometimes when I make these they have the brownie paper crust ontop and other times they don’t. What makes it so they get the crust? As it looks better with it however I can’t figure out what I do differently some times.
Hi,
I hope the messages gets to you.
Myself and my family LOVE your brownie recipe, however when doing melted chocolate on top then cutting it the chocolate just flakes off? Have you got any tips? Thank you!
Hi Amy, this happened to me also. I found that if I left my brownies to cool a little before putting on the melted chocolate and then set in the fridge it didn’t crumble quite as much.
I drizzle the chocolate on top after cutting. It works better for me
Try melting your chocolate with a little 1-2 tsp of milk Xx❤❤
Very very tasty and love how fudgy they are. I’m not exactly known for my baking skills but I’ve baked these a couple times, both times they’ve had raving reviews. I did struggle both times with them being a touch too fudgy when it came to trying to cut them but I just ended up part freezing them so I could cut a bit easier!
Hi,
I’m wanting to make a few of your brownies for my friends birthday.. can I make a few brownies and leave them on the side whilst they bake one at a time? Will they be ok to sit on the side or will they need to go in the fridge? Thanks
Brownie mixture needs baking immediately and not leaving on the side unfortunately! x
Hi Jane,
I can’t wait to try this recipe! Should I cut the chocolate Mars and then freeze the pieces or freeze the whole bar and then chop just before use? Thanks!!!
I chop the Mars bars and then freeze them, it doesn’t take long in the freezer I leave them for about 30 mins
Love this recipe so much made these the other day and super yummy. I was wandering if I wanted to add Lindt balls instead of Mars bar would I need to freeze them? And do I need to chop them in half as well or leave them whole? Thank you so much.
Hi Jane, PLEASE can you help me.
My Goddaughter has asked me to make Reese Brownies for her boyfriend….. I always make your Mars Bar brownies and thought maybe I could tweak this recipe by swapping the Mars bars for the Reese little cupcakes and maybe adding a little bit of peanut butter… Any advice please?? X
P. S I’ve pre-ordered your book and I’m super excited for August!!!!
Hello! Yes that sounds great. You can basically merge my biscoff and mars bar recipes – maybe add up to 200g peanut butter. Ahh thank you so much for pre-ordering the book, I am so so excited too!xx
Hi Jane
Can you use double decker in these and do you have to freeze them.
yes you can, and yes I would freeze them!
I’ve made this recipe a couple of times and they are the
best brownies. Everyone loves them!
Hi Jane.
My brownie top cracks when baking, why is this? X
Do you mean there are actual cracks or like the top has a fine layer that cracks a bit? x
Hi Jane. Thank you for your recipes, they’re amazing! I’ve made lots of your bakes and they’re a hit with family and friends. I don’t suppose you could help me with adapting the recipe could you please? I want to make a large traybake and a small traybake for a family birthday but I’m not sure of quantities. The tray sizes are 32cmx20cm (12.5”x8”) and 19cmx13cm (7.5”x5”).
THANK YOU!
Really good! But they have come out a bit rich. Could anyone help me make them less bitter/rich? 🙂
What chocolate did you use? They are rich however so it may be best just to eat a smaller slice!!