Mars Bar Chocolate Mousse!

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Delicious Gooey, Fudgey, Caramelly & Chocolatey Mousse with a Yummy Light and Fluffy Texture!


I have always loved Mars Bars, even deep fried Mars Bars (if you haven’t heard of these, you’re missing out!) and I wanted to make something deliciously yummy with them thats a little different! I have seen a couple of recipes for different Chocolate Mousses and they all look delicious and yummy, but I love the Fudgey goodness of the Mars Bar!

These are surprisingly easy to make, and yes they do contain raw egg, but this isn’t a problem! (See my note below) the Chocolate flavour is rich and delicious, but the gooey light texture makes it so worth it – you would think they are too rich by looking at them, but they’re not – so yummy!


You guys already know that Chocolate is my weakness, and if you look at the Sweets section on my Recipes page, you will realise that I adore fudge – its just SO good! This is the perfect dessert for anyone like me!

I hope you like the recipe!


This makes 7-8 Mousses!


– 4x 33.8g Mars Bar (the 4 bar multipack!)
– 75g Milk Chocolate chips/chopped
– 100ml Double Cream
– 3tbsp Cocoa Powder
– 5 Large Egg Whites
– 100g Caster Sugar
– Whipped Cream
– Chocolate Decorations



1) Chop up the Mars Bars into small pieces – pour the Cream, Chocolate, Mars Bar pieces, and Cocoa Powder into a heavy-based saucepan and melt on a low heat. Stir the mix gently but constantly whilst it all melts!

2) Once the mix has melted, transfer to a Large Bowl and leave to the side to cool for about 10 minutes, stir occasionally so a skin isn’t formed on the mix!

3) Whisk the Egg Whites into soft peaks (like you would a meringue) I used an electric hand whisk as I was feeling lazy! Once you have reached the soft peaks stage, gradually add the caster sugar a teaspoon at a time (again like you would a meringue) until it is all incorporated into the Egg Whites!

4) Fold 1/4 of the Egg White mixture into the chocolate mix, and then fold in the rest – be gentle as you don’t want to knock out all of the air you made in stage 3!

5) Once incorporated, pour into your ramekins! (I have an abundance of Gü ramekins so I use those, but you can use smaller ones if you’re not a fan of too much rich dessert!) Leave them to set in the fridge for at least 4 hours!

6) Decorate with whipped cream and chocolate decorations and ENJOY!


Tips and Ideas

This can sometimes set a little loose if you don’t leave it long enough to set – sometimes if they’re larger mousses they could take overnight to set! Or you can set it as one giant dessert, just leave it overnight so that it has time to firm up!

You can use more Mars Bars in the mix to make it up to 200g, but I nearly always bulk it out with the Milk Chocolate as sometimes Mars Bars can be so expensive!!

This recipe DOES have raw eggs in (which yes I have mentioned before aren’t great) but in the UK we pretty much know our eggs are safe to eat raw, but these shouldn’t be eaten by Pregnant Women, the Elderly, or young children if you’re not comfortable about the raw eggs! 🙂

These will last 2 days in the fridge!



Find my other Dessert Recipes on my Recipes Page!

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About Author

Hiya! I'm Jane, and I adore baking, cooking and all things delicious. I'm also partial to homewares, lifestyle posts and more!


  • Heidi
    January 4, 2019 at 2:10 pm

    Would these mars bar mousses freeze ok do you think?

    • Jane's Patisserie
      January 4, 2019 at 4:26 pm

      I’m afraid I’m unsure as it has raw egg in! Sorry!!

  • Eleanor
    July 14, 2018 at 11:52 am

    Hi Jane! I was just wondering if I’d be able to switch out the milk chocolate and cocoa powder for white chocolate? I’m making layered mousses so ideally I’d need the textures to be similar, I’ve made messes before! Love your recipes 🙂

    • Jane's Patisserie
      July 14, 2018 at 2:28 pm

      Hey! Unfortunately with this recipe I have never tried it, and my fear would be it might not set as well or might split? You could give it a shot, but I honestly don’t know! Sorry! x

  • chef mimi
    September 9, 2015 at 11:26 pm

    I do not know what these are! A candy bar? I wish there was a photo so I could see… But your mousse looks perfect!

    • Jane's Patisserie
      September 11, 2015 at 4:49 pm

      Ohh sorry – yes it’s a candy bar! It’s like a fudge/caramel/chocolate bar 🙂

  • danaeL
    August 31, 2015 at 9:18 am

    What a wonder! Sounds delicious…

  • jwuollife
    August 27, 2015 at 7:18 am

    This looks incredible! 😀

  • Rati
    August 27, 2015 at 1:50 am

    On my list again Jane!! Love it! 🙂

    • Jane's Patisserie
      August 27, 2015 at 9:47 am

      Haha thanks Rati! 🙂

    • Rati
      August 27, 2015 at 2:18 pm

      And I’ll update and will tag you when I make this! Did you like how my caramels came out?

    • Jane's Patisserie
      August 27, 2015 at 6:42 pm

      Thanks! And yes I did, they looked amazing!

  • thedietingdiabetic
    August 26, 2015 at 6:07 pm

    This looks purely amazing!

  • hailhop22
    August 26, 2015 at 4:30 pm

    My mom always got a mars bar at the store when I was a kid. She would pick out a candy bar and let me pick one out as well. Good memories and I might just have to make this for her 🙂

  • lucyneu
    August 26, 2015 at 4:10 pm

    Do you reckon these would work with other chocolate bars like Milky Way?

    • Jane's Patisserie
      August 26, 2015 at 4:11 pm

      I have never tried, but you could if you like – I’m not sure what Milky Ways are like if you melt them and such but I guess it would be similar? 🙂

  • thesnowwoman
    August 26, 2015 at 12:31 pm



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