The Best Mars Bar Cupcakes


Mars Bar Cupcakes | Best | Chocolate | Cake | Cupcake

Ever since I can remember my brother has always been obsessed with Mars Bars. As it’s his birthday this Saturday, I decided to turn his favourite chocolate bar into his favourite cupcake! And just so you know, Mars Bar Cupcakes are ridiculously amazing and you need them in your life. Because a life without Mars Bars is a life not worth living!

Here is what you will need to make about 16 -20.

(Recipe adapted from Mummy Mishaps)

  • 3 Mars Bars, chopped
  • 1 tbsp Milk
  • 200g Unsalted Butter
  • 200g Golden Caster Sugar
  • 200g Self Raising Flour
  • 25g Cocoa Powder
  • 4 Eggs


Chocolate Buttercream

  • 190g Unsalted Butter, Room Remp
  • 250g Icing Sugar
  • 3 tbsp Cocoa Powder
  • 1 tbsp Milk
  • 1-2 Mars Bars, Chopped to Decorate


Essential Equipment

  • 12 Hole Cupcake Tin *
  • Cupcake Cases (I use foil)

*If you have 2 great! If not, just bake in 2 batches.


Mars Bar Cupcakes Recipe

Firstly, preheat your oven to 190°C/Fan 170°C & line a cupcake tin with cases.

Next, put the milk & the chopped Mars Bars into a heavy based saucepan and melt gently over a low heat. Leave to one side to cool.

Mars Bar Cupcakes | Best | Chocolate | Cake | Cupcake

Either in a stand mixer or a large bowl with an electric hand whisk, cream together the butter & sugar until light and fluffy.

Mars Bar Cupcakes | Best | Chocolate | Cake | Cupcake

One at a time, beat the eggs into the butter & mix until well combined. Then sift in the flour & the cocoa powder and fold in until just combined.

After that, fold in the melted mars bar until you have a smooth, thick batter.

Mars Bar Cupcakes | Best | Chocolate | Cake | Cupcake

Lastly spoon the mixture evenly into the cases (about 2 thirds full) and bake for 18-20 minutes.

Test with a skewer to see when they’re done. If they’re ready the skewer will come out clean, if there is cake batter on it, they need a few more minutes.

Finally, allow to sit in the tin for 2 minutes before removing & placing on a wire rack to cool completely.


Chocolate Buttercream Frosting

Firstly, sieve the icing sugar & cocoa powder together into a bowl then set aside.

Then either in a stand mixer or in a large bowl with an electric hand whisk, cream the butter until softened.

Next, mix the icing sugar/cocoa powder into the butter in thirds. Beat well after each addition.

Lastly add the milk to loosen the mixture and make it smooth. You want a soft consistency that can still hold it’s shape. This will make for easier to pipe.

Mars Bar Cupcakes | Best | Chocolate | Cake | Cupcake

To decorate, load a piping bag with a nozzle of your choice, fill with the buttercream and pipe a swirl onto each cupcake.

Finally if you fancy it, chop up a Mars Bar and place a couple of pieces on top of each one to finish. While you’re at it, why don’t you eat one to celebrate how awesome you are for making such amazing cakes?!

Mars Bar Cupcakes | Best | Chocolate | Cake | Cupcake

In conclusion, these Mars Bar Cupcakes are moist, full of Mars Bar flavour. Therefore they’re super delicious! These beauties pave the way for many other chocolate bars to be converted into cupcakes. I can’t wait to give some a try!

Mmmm just think, Galaxy cupcakes, Cadburys flake cupcakes, Lindt lindor cupcakes, Yorkie cupcakes, Tobelerone cupcakes, Terry’s Chocolate Orange cupcakes, seems like the list is actually endless! It’s a shame my stomach isn’t… God help my waistline.

I hope you enjoyed the post my lovelies, until next time!

Miss KitchenMason

<imgsrc=Mars Bar Cupcakes | Best | Chocolate | Cake | Cupcake>
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36 thoughts on “The Best Mars Bar Cupcakes”

  1. Steph says:

    I made these recently and they were lovely! Ive just made a Milky Way alternative today and they are just as nice 😀 thank you for recipe !

    1. Miss KitchenMason says:

      Ooh! A Milky Way version sounds great! Glad you liked them Steph 🙂

  2. linda says:

    Hiya I’ve recently gotten a few mars bars and been looking for a recipe to use them, these looks aaaamazing! I love how u melt mars into the batter, can’t wait to make them! Thanks for sharing 🙂 🙂

    1. Miss KitchenMason says:

      Haha thank you!! Glad you like them 🙂

  3. Alicia says:

    I only have salted butter, will it affect the frostings?

    1. Yes, you will likely be able to taste the salt.

  4. Alicia says:

    More milk is what i was meant to say…oops

  5. Alicia says:

    They worked quite well, i suggest using more butter when melting the marsbars and also a touch of butter, this make it smoother. Also i pushed a small piece of mars bar into the centre of each cupcake, they were absolutely divine. All i have to do is make the frosting YUMMO!

    1. Fantastic! Thanks for the tip 🙂

  6. Alicia says:

    Thank you so much! x

    1. No problem! I hope they turn out well for you 🙂

  7. Alicia says:

    What can i use instead of Golden Caster Sugar

    1. Hi Alison, regular caster sugar is fine x

  8. Diana says:

    Hi, what size mars bars have you used as they come in several sizes these days …

    1. What I would call the ‘standard sized’ Mars bars. About 12cm or so?

      1. Diana says:

        Thanks so much, I was hoping it was as I have just made them and waiting for them to cool down a bit before I try them … they smell delicious. I have also made a large loaf cake from same mixture.

        1. Oooh fantastic! That loaf cake sounds delicious, let me know how it all turns out Diana x

  9. Aisha says:

    Hello! Thank you for sharing such a wonderful recipe! As I would not need too many cupcakes, I was wondering if I could halve the recipe? Thank you!

    1. Thank you! And yes, halving the recipe shouldn’t cause you any problems 🙂

      1. Aisha says:

        Thank you! I’m excited to give it a try. 🙂

        1. No problem! Let me know how you get on x

      2. Aisha says:

        They tasted amazing! Thank you, thank you, thank you! 😀

        1. Awww you’re welcome!! I’m so pleased you like them. I hope you try more of my recipes 🙂

  10. Sue C says:

    I have some really nice cupcake cases but when I bake with them, the fat in the cake leeches out and stains the cases, making them not so nice 🙁 Is it the case itself, and what can I do to avoid this?

    1. Hi Sue, that’s why I tend to use foil cases as opposed to paper cases most of the time. It helps to avoid any butter seeping out through the case. Generally a little more expensive but worth it into opinion x

    2. Elena says:

      Put some uncooked rice underneath the cupcake cases before you pop them in the oven!

      1. Miss KitchenMason says:

        What does that do Elena? I’ve not come across that before.

        1. Elena says:

          It soaks up the oil that would usually soak the bottom of the cupcake case. Works a treat!

          1. Miss KitchenMason says:

            Fantastic! Thanks for sharing! You learn something new every day 🙂

  11. Do you use cupcake cases or muffin cases?

    1. Cupcake. Muffin cases are usually bigger. X

  12. Em! I am making these this weekend! 🙂

  13. Natalie says:

    I think these may be one of my faves? I will deffo make these one day

    1. Thank you! My brother, whom they were intended for, absolutely loves them so they’re definitely a winner!

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