Slow Cooker Chocolate and Mint Aero Bubble Cake

Slow Cooker Chocolate and Mint Aero Bubble Cake

 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 archives 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. 🙂

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!

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 -

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 from - this recipe has gone viral several times, find out why today!

Slow Cooker Mint Aero Bubble Cake

Slow Cooker Chocolate Mint Aero Bubble Cake by BakingQueen74

Slow Cooker Chocolate and Mint Aero Bubble Cake

A delicious rich chocolate cake baked in your slow cooker with added Mint Aero Bubbles
4.5 from 4 votes
Print Pin Rate
Course: Baking
Cuisine: Slow Cooker
Prep Time: 5 minutes
Cook Time: 3 hours
Total Time: 3 hours 5 minutes
Servings: 8
Calories: 411kcal


  • 190 g plain flour
  • 1 tsp baking powder
  • 50 g cocoa powder
  • 200 g light brown sugar
  • 125 g butter
  • 3 eggs
  • 180 ml milk I used semi-skimmed
  • 1 large share bag of Mint Aero Bubbles


  • Grease and line the slow cooker bowl.
  • Mix the flour, baking powder and cocoa powder in a large bowl.
  • Cream the butter with the sugar then add the eggs slowly, mixing after each addition.
  • Add the milk and whisk until smooth.
  • 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.
  • Put the lid on and turn the slow cooker onto high.
  • Cook for 2-3 hours on high until firm.


Line your slow cooker bowl with baking paper so you can remove the cake in one piece.
Tried this recipe?Tag me @bakingqueen74 or use hashtag #bakingqueen74!



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I’ve done carrot cake in my slow cooker which turned out lovely so keen to try this one. never done any sort of chocolate cake what cocoa powder do you use please


oh my god! The only thing wrong with this recipe is IT TAKES SO LONG!!!!! I just can’t wait that long! Going to try it though x

Hamish McIntosh

thank you very much ☺

Hamish McIntosh

do you use a tea towel under the lid to absorb the condensation for this cake, thanks in advance.

Laura Dive

This recipe looks and sounds absolutely AMAZING!!
I WILL be making this very soon 🙂
What if before tipping the mixture into the slow cooker if i stirred in some of the bubbles? Do you think that’d just automatically melt the bubbles?


Also coating the bubbles after freezing means that they don’t all sink to the bottom… Also good advice for fruit in cakes 🙂
Great recipe!!! Love my s/c

becki watson

I have a 6.5l s.c would I just double up the recipe and time or would that not work. Ive never done a cake in s.c before so thanks for any tips x


Many Thanks! Looking forward to trying it!


Hi, Just a quick (possibly quite blonde question); you say to grease and line the bowl of the slow cooker but in the pictures it doesn’t look like you did that? I assume you mean use grease-proof paper to cover the bottom and the sides of the bowl otherwise it wouldn’t come out? Is that right?
I’m not the biggest fan of mint aero, but want to try out making the cake in the slow cooker for sure! Thinking of other things I could exchange the aero for! Thanks, Amy

Karen arneil

Try orange aero bar broken up .it tastes great

First – this cake looks fantastic !!
And second – I’ve never baked a cake in a slow cooker and I’m intrigued 🙂


Looks lovely. I’ve got a large slow cooker so I’m wondering if I could put the cake in a regular cake tin inside the cooker? If so would you need to put water in the base of the cooker around the cake tin?
Many thanks 🙂

Oh my goodness, this looks lovely. I never knew you could do cake in a slow cooker, must try it

Wow this looks amazing. Have just pinned it #recipeoftheweek


Hi I use this recipe to make malteser cake or galaxy counters cake but I use a large cake case in the slow cooker to save all the messing lol thanks for sharing xx


Hi. Have cooked this for about 2 hrs 20 mins. All the top has holes in. How did you get the cake out of the slow cooker, did you leave it to cool first ??


Great idea, did this today cooking times vary slightly mine took just over 3 hrs but is amazing !!! Thanks for the idea will be keep this for another time

Donna Drew

Just put mine in now for Crochet group they enjoyed the giant cookie last time.

Allison Webb

Made it for the first time today and it was delicious! Not stodgy and not too sweet! Thanks for the recipe. I was suprised by how much it rose and I had the lid off a few times to check it was cooked.


Hi, I’m just wondering what you line the slow cooker with in step 1? I’ve never done a cake in it before. This recipe looks lovely. Thanks


If you grease your slow cooker with butter then dust all over that with flour, it saves the need for greaseproof paper. 🙂


A note for myself – as we are dairy free will use Raspberry Ruffle bars chopped up and Pure soya spread in place of butter and goat milk


Thanx for this tip. We are also dairy free and had no idea that raspberry ruffles were dairy free.x

That looks very fudgy, I can imagine it’s the kind of cake that clings to the top of your mouth, yum! Thanks for linking up to Sweet and Savoury Sunday, stop by and link up again. Have a great weekend!!

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