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    Home » Recipes » Slow Cooker

    Slow Cooker Chocolate and Mint Aero Bubble Cake

    image of Lucy's face
    Modified: Sep 30, 2025 · Published: Apr 18, 2014 by bakingqueen74 · This post may contain affiliate links · 176 Comments
    32916 shares
    Jump to Recipe

     Slow Cooker Chocolate and Mint Aero Bubble Cake – a delicious chocolate fudge cake baked in the slow cooker with Mint Aero Bubbles! Baking in the slow cooker is so easy. The most popular recipe on my blog. Look in my Slow Cooker Desserts for loads more slow cooker cakes and bakes!

    So it is Good Friday and I am bringing you …..more chocolate! Well it can’t be avoided, this is the time of year for it after all. 🙂

    Inside of the chocolate cake topped with Mint Aero bubbles.

    This slow cooker chocolate and mint aero bubble cake is a cake with a difference as it is made in my slow cooker (3.5 litre oval slow cooker).

    I decided to make a slow cooker chocolate and Mint Aero Bubble cake quite simply because I wanted to see the Aero Bubbles in a cake!

    I have seen Maltesers and similar being used in traybakes (do make the Malteser traybake, it is delicious!) but I wanted these to go in a cake, not a no-bake or brownies.

    I thought the cake would look great when sliced as you would see the green circles against the dark brown chocolate cake, as well as the bubbly texture of the bubbles against the velvety cake.

    Well that was the idea anyway!

    Slice of rich chocolate cake with green Aero bubbles on top.

    I saw in the traybake etc recipes that sometimes they froze the Maltesers or Aero bubbles overnight so they didn’t melt when baking.

    I didn’t have the patience for that so just went for it.

    Sometimes you just want cake then and there, am I right.

    Ready to start baking! The base is lined with baking paper.

    I would line the sides of the pot too to make it easier to get out!

    Slow Cooker Chocolate and Mint Aero Bubble Cake - BakingQueen74

    This is what it looked like after 45 mins.

    The edges are becoming firm and the Aero bubbles are melting! Just look at that rich chocolate colour, mmmmm.

    Slow Cooker Chocolate and Mint Aero Bubble Cake - BakingQueen74

    Another hour later, after adding more Aero Bubbles in the centre.

    The cake is starting to firm up.

    Slow Cooker Chocolate and Mint Aero Bubble Cake - BakingQueen74.co.uk

    Finished, after two and a quarter hours. Yummy, rich and fudgy chocolate cake topped with minty chocolate!

    Slow Cooker Chocolate and Mint Aero Bubble Cake

    Join all the hundreds of thousands of people who have read my recipe for my slow cooker chocolate and mint Aero bubble cake below!

    Slow Cooker Chocolate and Mint Aero Bubble Cake

    If you like this recipe, make sure you look at my guide to baking in a slow cooker with loads more slow cooker cakes, desserts and bread recipes! If you have any questions do leave a comment, I reply to as many as I can!

    See also my Slow Cooker Archives for loads more slow cooker recipes including family recipes.

    Pin my slow cooker mint aero bubble cake recipe for later:

    Slow Cooker Mint Aero Bubble Cake

    Recipe

    Chocolate cake with Mint Aero balls in a slow cooker pot.

    Slow Cooker Chocolate and Mint Aero Bubble Cake

    By Lucy Allen | BakingQueen74
    A delicious rich chocolate cake baked in your slow cooker with added Mint Aero Bubbles
    4.86 from 14 votes
    Prep Time: 5 minutes minutes
    Cook Time: 3 hours hours
    Total Time: 3 hours hours 5 minutes minutes
    Servings: 8
    Course: Baking
    Cuisine: Slow Cooker
    Calories: 411kcal
    Rate Save Saved! Pin Print

    Ingredients

    • 190 g (1.5 cups) plain flour (all-purpose flour)
    • 1 tsp baking powder
    • 50 g (0.66 cups) cocoa powder
    • 200 g (0.9 cups) light brown sugar
    • 125 g (4.5 oz) butter
    • 3 eggs
    • 180 ml (0.75 cups) milk I used semi-skimmed
    • 1 large share bag of Mint Aero Bubbles

    Equipment

    large oval slow cooker
    large oval slow cooker

    Instructions
     

    • Grease and line the slow cooker bowl.
    • Mix the flour, baking powder and cocoa powder in a large bowl.
      190 g / 1.5 cups plain flour (all-purpose flour), 1 tsp baking powder, 50 g / 0.66 cups cocoa powder
    • Cream the butter with the sugar then add the eggs slowly, mixing after each addition.
      200 g / 0.9 cups light brown sugar, 125 g / 4.5 oz butter, 3 eggs
    • Add the milk and whisk until smooth.
      180 ml / 0.75 cups milk
    • Fold in the flour mixture.
    • Pour the cake batter into the slow cooker bowl.
    • Add about half the Mint Aero Bubbles, scattering them over the top.
      1 large share bag of Mint Aero Bubbles
    • Put the lid on and turn the slow cooker onto high.
    • Cook for 2-3 hours on high until firm.

    Notes

    Line your slow cooker bowl with baking paper so you can remove the cake in one piece.
    Have you made this recipe?Please leave a star rating and comment below to let me know how you got on!

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    Comments

    1. Sew White says

      April 24, 2015 at 9:19 am

      I am so trying this!

      Reply
    2. Nicki says

      February 25, 2015 at 2:51 pm

      Hiya yes I did it with the skewer. It turned out well anyway. Not all the balls melted into the cake because I added more. It was delish. Thanks for your replies.

      Reply
      • bakingqueen74 says

        February 25, 2015 at 6:56 pm

        Great!

        Reply
    3. Nicki says

      February 24, 2015 at 11:20 am

      I’ve just made the mint aero cake and it looks pretty good, haven’t tasted it yet as its for my work colleagues tonight. The only thing I have a problem with it testing to see if it’s cooked in the middle because of the mint aero balls as obviously they don’t set. So I have a tendency of the sides being over cooked. Any suggestions?

      Reply
      • bakingqueen74 says

        February 24, 2015 at 12:23 pm

        I usually use a skewer or cake tester, it should be quite easy to see if the cake is firm or not by checking an area without the chocolate, the aero balls usually melt into the cake I find. Good luck!

        Reply
    4. Nicki says

      February 22, 2015 at 2:31 pm

      I’ve just made this cake and added orange matchsticks instead and it’s absolutely gorgeous. The best chocolate cake I’ve ever made. Thank you for the recipe.

      Reply
      • bakingqueen74 says

        February 22, 2015 at 6:11 pm

        Great! it sounds lovely with orange matchsticks

        Reply
    5. lisa says

      February 12, 2015 at 9:28 pm

      Hi ive got a round slow cooker instead of oval. My cakes been cooking for 2 hrs and looks cooked at the top but when i put a skewer in its not clean should i take it out and hope it continues to cook the middle?

      Reply
      • bakingqueen74 says

        February 12, 2015 at 9:50 pm

        Turn it into low for a bit so it doesn’t burn!

        Reply
    6. Helen says

      February 08, 2015 at 2:26 pm

      HI used a 6.5 l with the above recipe and it was really good. Just wondering whether you can get away with baking it for longer on low setting? Thinking it would be good to take skiing and come home to some lovely cake!

      Reply
      • bakingqueen74 says

        February 08, 2015 at 7:59 pm

        Hi, it doesn’t tend to rise as well on low I find with cakes, but you could try it!

        Reply
    7. Kelly anne meese says

      February 07, 2015 at 7:50 pm

      When you say 1. Grease and line the slow cooker bowl. Do you use baking sheet/paper to line the bottom and just grease the sides?

      Reply
      • bakingqueen74 says

        February 07, 2015 at 7:58 pm

        I greased the base and sides of the pot then lined the base only for this cake but since then I usually now grease the pot and line the whole bowl using baking paper or a large cake tin liner, as you can then use the paper or liner to pull the cake out. hope that helps!

        Reply
        • Kelly anne meese says

          February 07, 2015 at 8:24 pm

          What would you recommend as I have a 6.5l slow cooker. Can I just follow what it say and make a smaller/flatter cake or not or do I need to do something else.

          Reply
          • bakingqueen74 says

            February 07, 2015 at 9:35 pm

            You could double it for a very big cake or use a deep cake tin inside your slow cooker if you have one that fits?

            Reply
    8. chris says

      February 07, 2015 at 6:13 pm

      Did this last weekend and it was amazing, thanks. I added white aero balls too but was a bit pointless as the mint overpowered the white. I got it in again now but without aero balls instead using cream eggs and topping after with flakes!!!!

      Reply
      • bakingqueen74 says

        February 07, 2015 at 6:40 pm

        yum, enjoy!

        Reply
    9. kylie says

      February 04, 2015 at 6:34 pm

      Not tried this but have made salted caramel peanut butter cookie dough n used that n omg that’s the most amazing thing ever

      Reply
    10. sharron says

      February 02, 2015 at 7:40 pm

      p.s….that cake tastes absolutely amazing, I’m so proud of myself, that’s the first cake I’ve baked in years…ty 74…X

      Reply
      • bakingqueen74 says

        February 07, 2015 at 6:38 pm

        excellent!

        Reply
    11. sharron says

      February 02, 2015 at 6:18 pm

      hi 74, I’m just baking this now, yay, recipes for my slow cooker, you sure are great….what I’m asking is, I’ve spraed the aero bubbles around but they seem too have all congregated too the centre of the cake, am I doing something wrong….

      Reply
      • bakingqueen74 says

        February 02, 2015 at 7:36 pm

        Hi, no that is normal as the cake rises as it bakes, just put some more on! Hope it turned out well

        Reply
    12. Annie says

      January 31, 2015 at 10:17 pm

      Just made this and it looks and tastes great, the aero bubbles did melt quite a bit and I forgot about lining it too! Doh! But still tastes great and will be sharing with the family at Sunday dinner tomorrow xx

      Reply
    13. hayley says

      January 28, 2015 at 9:12 pm

      Hi, this looks lovely. Do you use salted or unsalted butter?x

      Reply
      • bakingqueen74 says

        January 28, 2015 at 9:20 pm

        Hi Hayley, I always use unsalted in cakes.

        Reply
        • hayley says

          January 31, 2015 at 8:40 pm

          Thank you, I did think so but like to double check. X

          Reply
    14. Rob says

      January 26, 2015 at 7:39 pm

      Could this just be cooked in the oven? what’s special about the slow cooker?

      Reply
      • bakingqueen74 says

        January 26, 2015 at 7:45 pm

        Hi Rob, the cake could of course, I have done it several time successfully, but the Aero bubbles wouldn’t stand up to being baked in the cake. I like baking in the slow cooker, that is all! 🙂

        Reply
        • Rob says

          January 26, 2015 at 7:51 pm

          Out of interest what would the cooking times and temperature be in the oven? I still may use the slow cooker tho! 🙂

          Reply
          • bakingqueen74 says

            January 26, 2015 at 8:59 pm

            About 25 mins at 180 in a fan oven, based on splitting it in two sandwich tins.

            Reply
    15. Hannah says

      January 24, 2015 at 8:40 pm

      Hi. This looks amazing. But in the photo it doesn’t look like you have lined the pot with anything? Did you just grease it? Thanks.

      Reply
      • bakingqueen74 says

        January 24, 2015 at 9:10 pm

        Hi, I lined it with baking paper on the base and a little on the sides. Best to line it or you won’t find it easy to get it out when cooked without breaking it!

        Reply
    16. Jay Stevens says

      January 23, 2015 at 12:33 pm

      Hi I’m Diabetic but this looks good! What sugar substitute would you suggest please?

      Reply
      • bakingqueen74 says

        January 23, 2015 at 12:46 pm

        Hi Jay, i dont know anything about diabetic substitutes so can’t help there.

        Reply
    17. Rachel says

      January 22, 2015 at 10:32 am

      Having a go at this right now !!!! It’s been in the slow cooker for just 30 minutes I cannot wait to see how it turns out !!

      Reply
      • bakingqueen74 says

        January 25, 2015 at 4:49 pm

        was it good?

        Reply
    18. Kerry says

      January 21, 2015 at 5:32 pm

      Hi how many portions do you think this makes ? Many thanks

      Reply
      • bakingqueen74 says

        January 21, 2015 at 5:33 pm

        Really depends on your portion size! but I’d say at least six, it is quite rich.

        Reply
    19. Rhys says

      January 20, 2015 at 7:49 pm

      Looks Incredible! Will definitely be giving this one a go, thanks!

      Reply
      • bakingqueen74 says

        January 21, 2015 at 9:21 pm

        Great, enjoy it!

        Reply
    20. Tony says

      January 12, 2015 at 12:41 pm

      Hi

      Made one of these tonight and I only seems to have taken 1-45mins for it to go firm is this ok? Put a skewer thought it and it come out clean.

      Thanks
      Tony

      Reply
      • bakingqueen74 says

        January 12, 2015 at 12:42 pm

        Hi Tony, yes that is fine, all slow cookers cook differently, in fact the one I used to make this cake does cook quite slowly. Enjoy!

        Reply
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    Hi, I'm Lucy! I'm a slow cooker addict, food blogger and also a busy working mum of two. I hope you'll enjoy the recipes I create and post which are perfect for busy families.

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