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Home ยป All Recipes ยป Thermomix Sweet Snack

Cadbury Caramilk Custard Slice - Thermomix

Published: Jul 22, 2020 ยท Modified: Mar 8, 2025 by Julie Carlyle ยท This post may contain affiliate links ยท 18 Comments

Jump to Recipe - Print Recipe
Two Caramilk Custard Slice on a floral table cloth

Just imagine a block of Caramilk chocolate and everyone's favourite Custard Slice had a love child. The resulting dessert would be this amazing Caramilk Custard Slice.

Cadbury Caramilk chocolate has a bit of a cult following amongst chocoholics at the moment. A fellow Thermomix enthusiast came across this recipe on "Australia's Best Recipes" website. She sent out a message for a Thermomix conversion to be written. I couldn't resist giving it a go.

I promise this is a "drop dead, simple" recipe to make. The custard slice is "no-bake" and sandwiched between two Arnott's Lattice Slice biscuits. It would be a fabulous recipe to make with the kids.

Substitute Ingredients

In some areas, Arnotts Lattice biscuits are no longer available. If you have trouble finding this product simply swap them for SAO biscuits. It won't make any difference to the recipe results.

Original Caramilk Custard Slice Recipe

The original recipe used just one block of Cadbury Caramilk Chocolate. Half was used in the filling and half in the ganache.

When I went to make the original ganache topping I found that it didn't set. Those followers who were watching me on Facebook live would have seen me waiting for the ganache to thicken enough for me to pour over the slice. Basically, it never achieved a useful consistency. The recipe had too much cream. 

So this meant I needed to discard the mixture... in my belly and start again. I decided to use my regular ganache recipe and substituted Caramilk Chocolate. Just to make sure there was enough topping to cover the slice I increased the volume of the ganache slightly. The adjustment ensured coverage of the chocolatey goodness over all the squares.

Landscape image of two Cadbury Caramilk Custard Slice on a floral tablecloth

...More Slices

I love desserts! Have you seen these delicious treats?

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Apple Slice with Streusel Topping

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Peppermint Crisp Chocolate Brownie

Square image of lemon slice with a flower vase behind on white backgraound

Lemon Delicious

 

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Landscape image of two Cadbury Caramilk Slices on a floral tablecloth

Caramilk Custard Slice Thermomix

Julie Carlyle
Just imagine a block of Caramilk chocolate and everyone's favourite Custard Slice had a love child. The resulting dessert would be this amazing Caramilk Custard Slice. #Thermomix #CustardSlice #caramilk
5 from 10 votes
Print Recipe
Prep Time 5 minutes mins
Cook Time 10 minutes mins
Refrigeration 1 hour hr
Course Dessert, Snack
Cuisine American, Australian, English
Servings 9 Slices
Calories 375 kcal

Equipment

  • 1 Thermomix

Ingredients
 
 

  • 200 g Lattice Biscuit Arnott's or Sao Biscuits
  • 90 g Caramilk Chocolate Cadbury Caramilk broken into pieces
  • 150 g milk
  • 475 g cream pouring cream
  • 100 g Instant Vanilla Pudding Cottee's
  • 22 g custard powder

Caramilk Ganache

  • 120 g Caramilk Chocolate Cadbury broken into pieces
  • 50 g cream pouring cream

Instructions
 

Preparation

  • Line a square cake tin with baking paper. Min Size 18cm square
  • Arrange 9 Lattice biscuits glaze side down on the paper in a square.
    200 g Lattice Biscuit

Caramilk Filling

  • Place 90g Caramilk chocolate in TM Bowl. Grate 4 sec/Speed 9.5
    90 g Caramilk Chocolate
  • Remove and reserve in a bowl.
  • Place remaining 120g Caramilk Chocolate in TM Bowl. Grate 4 sec/Speed 9.5
    120 g Caramilk Chocolate
  • Remove and reserve in an additional bowl.
  • Without cleaning the bowl add the milk to the TM Bowl. Heat 2min/70 degrees/Speed 1.
    150 g milk
  • Pour milk over the 90 grams of grated chocolate. Stir with a spoon to dissolve. Reserve.
  • Add butterfly whisk to TM Bowl.
  • Add 475g cream, vanilla pudding and custard powder to TM bowl. Whisk 1 min/Speed 4
    475 g cream, 100 g Instant Vanilla Pudding, 22 g custard powder
  • Scrape down the bowl and add the cooled chocolate, milk mixture.
  • Whisk 1 min/Speed 4.
  • Pour the custard filling over the arrange biscuit base and smooth.
  • Arrange another 9 lattice biscuits on top of the Caramilk custard slice.
  • Place the slice in the fridge to set.

Caramilk Ganache

  • Place 120g grated Caramilk Chocolate in the microwave. Heat in 30 sec intervals.
  • Stir the chocolate and repeat until smooth.
  • Add cream to the chocolate and stir.
    50 g cream
  • Pour the ganache over the slice immediately and smooth.
  • Return the Caramilk Custard Slice to the fridge until serving.

Video

Notes

Keep slice refrigerated until serving.

Nutrition

Calories: 375kcalCarbohydrates: 29gProtein: 3gFat: 28gSaturated Fat: 17gCholesterol: 88mgSodium: 127mgPotassium: 148mgFiber: 1gSugar: 23gVitamin A: 851IUVitamin C: 1mgCalcium: 108mgIron: 1mg
Keyword Cadbury, Caramilk, Chocolate, Chocolate dessert, Custard, Dessert, slice, snack, Sweet snack
Tried this recipe?Let us know how it was!

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Thank you for stopping by,

Happy Cooking

j xx

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Reader Interactions

Comments

  1. Wendy says

    May 09, 2024 at 5:04 pm

    Canโ€™t get Sao biscuits, will Malt O Milk work OK.

    Reply
    • Brett Carlyle says

      May 26, 2024 at 2:34 pm

      Hi Wendy
      Yes this would work perfectly, any plain sort of biscuit that isnโ€™t too big.
      Happy cooking
      Julie xx

      Reply
  2. Peta MacLaughlin says

    March 08, 2022 at 12:04 pm

    5 stars
    Delicious!

    Reply
  3. Steph Drifter says

    October 08, 2021 at 12:52 pm

    5 stars
    Made these to take to a dinner party, and they stole the show! These are a massive win!

    Reply
  4. Krystal says

    September 16, 2021 at 4:01 pm

    5 stars
    OMG!! Where have you been all my life?! Amazing!!

    Reply
  5. Anika Petersen says

    August 02, 2021 at 11:12 am

    5 stars
    Made these a couple of times now and they turn out perfect every time

    Reply
  6. Natasha says

    July 16, 2021 at 10:41 am

    5 stars
    I love Caramilk so tried these and these were even better. Love it.

    Reply
  7. Bec says

    June 28, 2021 at 8:43 pm

    Hi, I canโ€™t find lattice biscuits anywhere! Is there something I could use instead? So wanting to try this. It looks delicious x

    Reply
    • Julie Carlyle says

      March 05, 2022 at 2:44 pm

      Arnotts have since stopped producing Lattice biscuits, you can sub with sayos.
      Happy cooking
      Julie

      Reply
  8. Nicole a says

    April 09, 2021 at 8:08 pm

    5 stars
    Just made this!! Soooo yum, thankyou!

    Reply
    • Julie Carlyle says

      April 23, 2021 at 8:30 am

      Hi Nicole
      I'm so pleased you enjoyed the slice!! It's also one of my quilty pleasures ๐Ÿ™‚
      Julie

      Reply
  9. Kate Livingstone says

    August 08, 2020 at 12:00 pm

    5 stars
    So good with the Lattice biscuits base and top, great idea

    Reply
  10. Erin Sinclair says

    July 28, 2020 at 12:46 pm

    5 stars
    So easy to make and so yummy. Thanks

    Reply
  11. Samara J says

    July 27, 2020 at 4:02 pm

    5 stars
    Thank you for the recipe ๐Ÿ˜˜

    Reply
  12. Row Macrae says

    July 26, 2020 at 7:54 am

    Hi, what size square tin would be best? Thanks

    Reply
    • Julie Carlyle says

      July 26, 2020 at 10:36 am

      Hi Row
      You can use any tin larger than an 18cm Square (7inch)
      I didnโ€™t have a square tin so I used a large rectangular roasting tray and just lined it with plastic wrap.
      Happy Cooking
      J

      Reply
  13. Louise says

    July 24, 2020 at 9:52 pm

    5 stars
    Thanks so much for doing this!!! Love your work

    Reply
    • Julie Carlyle says

      July 24, 2020 at 10:13 pm

      Thank you so much for your kind words Louise xx
      J

      Reply

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Hi, I'm Julie, a recipe developer, published cookbook author, and registered nutritionist. My first love has always been cooking and food. ThermoKitchen is where my love of food combines with a "lazy streak" as I utilise my favourite appliance, the Thermomix! I discovered Thermomix in 2014 and loved it so much I became a consultant for the brand.

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