Mars Bar Lava Cake

Submitted by Jaclyn Wark

Mars Bar Lava Cake

5 from 2 votes
Serving: 4
Prep Time 15 minutes
Cook Time 1 hour 30 minutes
Total Time 1 hour 45 minutes

Ingredients
 

  • - 1 x packet/box Chocolate Cake Mix
  • - 1 x Instant Chocolate Pudding Mix
  • - 3 x Mars Bars

Instructions
 

  • - Make Cake mix following the instructions on packet.
  • - Put Cake mix in slow cooker
  • - Make Chocolate Pudding according to instructions on the packet.
  • - Pour on top of cake mix DO NOT STIR
  • - Cut up Mars Bars and sprinkle over the top. Do not stir together.
  • - Cook on High for 1-2 hours until Cake is cooked.
Paulene @ Slow Cooker Central

About the Author: Paulene @ Slow Cooker Central

52 Comments

    1. Paulene @ Slow Cooker Central March 16, 2016

      Make the dry cake mix into a wet cake batter ready to cook as per the box or pkt instructions 🙂
      Then use this mix in the slow cooker recipe

  1. Kylie Stuart July 1, 2017

    Do you add the self saucing sauce in this recipe that comes with the pudding?

    1. Paulene @ Slow Cooker Central June 16, 2018

      I see some are saying they cooked it in a 1.5L
      Or you could go larger like 3L etc

  2. Michelle Tonkin June 11, 2018

    I couldn’t find a chocolate pudding so used a vanilla pudding instead. It came out as a 2 tone desert. When i eventually found a chocolate pudding i made it only for my kids say they prefer the vanilla pudding. I only cooked it 1 1/2 mins in a 1.5l slow cooker. This recipe is a total hit & i make it alot.

  3. Angie Shields June 13, 2018

    This was absolutely amazing, all 3 of my kids loved it and there is leftovers for a couple of us tomorrow. Definitely making this again, I think I need a dessert slow cooker now lol

  4. Can someone please tell me what the difference is between an instant pudding and a self saucing pudding?
    Someone has told me not to add the sauce sachet or water so I am very confused now being I thought all pudding needed sauce =/

  5. There are a few people asking the same question that I did in regards to the pudding.
    Paulene confirmed with me that it is an instant pudding not a self sauce pudding and I found what she was talking about in the dessert isle near the jellies and mousses.
    It is a milk base dessert that would normally set like a custard… hope this helps somebody 🙂

  6. Jodie Leemhuis July 4, 2018

    Wow this recipe is absolutely amazing Jaclyn Wark. Easy to prepare and so yummy served with ice cream on a cold night. Rated 10/10 by our household 🙂

  7. Tracy Walsh July 10, 2018

    This was a disaster. I cooked it in my new Aldi 3 ltr. After 2.5 hours it was still not cooked. It was just like the sauce in a self saucing pudding, very little cake bits. I cooked it exactly as recipe states.

    1. Paulene @ Slow Cooker Central July 11, 2018

      I’ve reviewed those Aldi 3L cookers on our review page and they are notoriously slow as I’ve reviewed. You’d need extra time in that cooker than normal recipe times state 🙂

  8. Mary Dawn July 15, 2018

    Can you double the mixture as I have a 5L slower cooker and I would be feeding 9 people?
    Does the cooking time need to change?

  9. Christina Buckley July 15, 2018

    Just made this today. Should have cut the mars bars up thicker but still tastes good x

  10. Monique Stone July 16, 2018

    Made this last night. It tasted awesome. Next time I will use a bigger slow cooker though. My baby slow cooker (1.5lt) was not big enough to contain the chocolate ‘lava’…

  11. Heidi Jones July 21, 2018

    We made this on Monday. It was absolutely fantastic. My whole family loved it.

  12. Jess Lenne July 23, 2018

    OMG this is the most delicious and creamy potato bake I’ve ever made . this will be a weekly new side dish in our house with everyone loving it . I did double the chorizo and bacon and added some spring onion to it but the flavour was incredible.

    1. Paulene @ Slow Cooker Central July 24, 2018

      Jess you’ve left this on the wrong recipe 🙂 If you want to re add it to the chorizo potato bake for me I can delete this one then x

  13. Made a vanilla one with chocolate mousse with choc pieces done in my 5 litre sc cook for 2 hours on high turned out beautiful…

    1. Paulene @ Slow Cooker Central October 2, 2018

      Other comments below suggest it will overflow in a 1.5L so best to go larger 🙂

  14. Was pretty yummy!! And easy to make, tho mine took close to 3 hrs on high in my slow cooker and i used vanilla instant pudding, think id prefere chocolate next time…. overall pretty good!! 🙂

  15. Made this lastnite but couldnt get cottees instant pudding mix so i used the areoplane desert mix. Was beautiful. Thanks

  16. Lots of people asking about tea towel method. For this recipe. It’s not in the recipe. But I would imagine it might get soggy without it ?

    1. Paulene @ Slow Cooker Central August 14, 2019

      When it’s not listed in recipe it’s not meant to be used 🙂

  17. I made this a week ago, beautiful. I used aeroplane chocolate dessert mix. Cooked in 5l slow cooker 2 hours on high. Spot on. ?

  18. I can’t get the instant pudding in my town. HELP….. What can I do in replacement?

  19. My 5 year old son and I are going to make this Sunday for hubby for Father’s Day / night desert. Son is so excited. Going to be cooking in my breville 3×2.5litre slow cooker how long should I increase the cooking time for please. As I have cooked cakes in the 6 litre one before and they have had a bit of crispy edges with a slight burnt taste so tried again on. lower heat and didn’t cook properly on the inside. Thank you in advance.

  20. Hi, I am going to try this tomorrow, just wanted to know, Do you have to serve it as soon as it has finished cooking?

    1. Paulene @ Slow Cooker Central January 29, 2020

      Is that what an instant pudding mix is called where you are? Not sure of your brands 🙂

  21. This recipe gets a 10 /10 rating for me. It was soo easy to make and absolutely delicious. My family loved it. Will definitely make it again. Just as nice warmed up the next day with ice cream. Yum yum yum. ?????????

  22. I finally got round to making this last night after having bought the ingredients a while ago. Delicious and everyone loved it, I served it with vanilla ice cream. Easy to make too, I used a Betty Crocker Devils Food cake mix and Gregg’s Instant Dessert with Chocolate Chips, followed the packet instructions for both. I also used 4 Mars Bars :-), cooked in my 3L SC for 2 hours on high. I would make this again for sure.

  23. Belinda Rodoreda July 12, 2020

    Absolutely mouth watering delicious!!
    So easy, the kid’s loved helping and watching it form into a yummy gooey desert.

  24. Gabrielle June 28, 2021

    I made this using snickers instead of Mars bars and ohhhhh yummm. I served with fresh whipped cream and it was delicious. Will certainly make again.

  25. Melinda Falla June 25, 2024

    5 stars
    First time trying turned out fabulous, used vanilla instant pudding as they didn’t have any chocolate cooked in 3.5L cooker for 3.5 hours and turned to warm setting until ready to eat, well worth trying

  26. 5 stars
    Oh my word! Yum!
    I used a woolies homebrand chocolate cake mix and an aeroplane chocolate mousse dessert mix.
    I lined my 6L slow cooker with baking paper.
    Cooked to perfection, decadent, but not sickly sweet. We served it with custard.
    Definitely a treat that is so easy to make.

    1. Paulene @ Slow Cooker Central April 28, 2025

      Thanks so much for taking the time to leave your detailed feedback Martinah. That’s so useful for others! And I’m so pleased you enjoyed it 🙂

5 from 2 votes

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