Our old fashioned Thermomix Hedgehog Slice has the perfect combination of chocolate, biscuits and sweetened condensed milk. A no-bake recipe that takes just 10 minutes to prepare.
This Thermomix Hedgehog Slice is by far one of our most popular slice recipes - along with our Clinkers Slice, Jelly Slice and Weet-Bix Slice.
Not only is this recipe quick and easy to prepare, it's a guaranteed hit with the kids (and adults too!).
Why You're Going To Love This Recipe
What's not to love about a big batch of homemade Thermomix Hedgehog Slice!?
- No-Bake - Forget about turning the oven on... this no-bake recipe requires no cooking at all!
- Feeds A Crowd - Our Thermomix Hedgehog Slice serves 24 making it the perfect option for parties, bake sales, lunchboxes and more.
- Nut Free - Unlike many hedgehog slice recipes, ours is completely NUT-FREE making it a great option for school lunchboxes. Of course, if you're not catering for nut-free allergies or school food regulations, you can always go ahead and add some chopped walnuts if you like.
- Basic Ingredients - This entire slice is made from 6 budget friendly pantry and fridge staples. In fact, you might find that you already have all of the ingredients at home.
- 5 Star Recipe - Our readers love this recipe. Try it for yourself and see why it's so popular.
What You Need
Just 6 ingredients are needed to make Thermomix Hedgehog Slice!
- Biscuits - also known as cookies in the US. I generally use Arnott's Marie biscuits, but you can use any plain sweet biscuit variety you like.
- Sweetened Condensed Milk - choose full fat (not skim or light) sweetened condensed milk as it sets firmer. I like to use Nestle brand as I find it gives a better result than the home brand options.
- Butter - use either salted or unsalted butter.
- Cocoa Powder - choose unsweetened cocoa powder.
- Coconut - choose desiccated coconut which is a fine, dry coconut.
- Chocolate - you can use any type of chocolate for melting over the top of the slice. I generally use milk chocolate, but you can replace it with white or dark chocolate if you prefer.
Step By Step Instructions
It couldn't be easier to make Thermomix Hedgehog Slice!
Step 1 - Crush The Biscuits
Place half of the biscuits into the Thermomix and chop.
Add the remaining biscuits and chop again.
TIP: Adding half of the biscuits at a time will give you the perfect balance of some finely crushed biscuits and some larger chunks.
Set the biscuits aside in a seperate bowl.
Step 2 - Melt
Melt the sweetened condensed milk and butter until smooth and no lumps remain.
Step 3 - Mix
Add the biscuits, coconut and cocoa powder and mix until combined.
TIP: You will need to use the spatula through the MC hole to help mix the slice mixture together.
Press into a prepared baking tin and set aside while you melt the chocolate.
Step 4 - Melt The Chocolate
Place the chocolate into a clean and dry Thermomix bowl. Melt until smooth.
Pour the melted chocolate over the slice base and chill for 4 hours.
Expert Tips & FAQ
For a hedgehog slice that sits high, grease and line a 20X20cm baking tin.
For a flatter hedgehog slice, grease and line an 18X28cm slice tin.
I used a 20X20cm tin for the slice in these photos.
Yes! You'll find that the majority of the biscuits will end up finely crushed while you will have some larger chunks remaining. If the chunks are very large, simply use the spatula to chop them into smaller pieces.
Store the Thermomix hedgehog slice in an airtight container in the fridge for up to 5 days.
Alternatively, this slice can be frozen for up to 3 months. Allow to defrost before consuming.
Related Recipes
We absolutely love baking slices... here's a few more of our most popular slice recipes:
Thermomix Slices Cookbook
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Thermomix Hedgehog Slice
Equipment
- Thermomix
Ingredients
- 500 g Arnott's Marie biscuits or any plain sweet biscuits
- 395 g sweetened condensed milk full fat (not skim or light)
- 250 g butter
- 25 g coconut shredded or desiccated
- 20 g cocoa powder
- 250 g milk chocolate
Instructions
- Line a 20cm x 20cm square cake tin with baking paper, making sure you leave plenty hanging over the edges to help you remove the slice once it’s set.
- Place 250g of plain biscuits into your Thermomix Bowl and crush for 3 seconds, Speed 4. Add the remaining 250g and mix for a further 5 seconds, Speed 4. Note: use your spatula/ wooden spoon to roughly break up any remaining large biscuits. Pour the biscuits into a separate bowl and set aside until needed.
- Pour the sweetened condensed milk into your Thermomix Bowl and add the butter (cut into 3cm pieces). Cook for 2 minutes, 60 degrees, Speed 1, or until the butter has completely melted.
- Add the biscuits, coconut and cocoa powder to your Thermomix Bowl and mix for 10 seconds, Speed 4, REVERSE, or until the mixture has completely combined.
- Pour the mixture into your prepared slice tin and flatten the surface with the back of a metal spoon.
- Clean your Thermomix Bowl and make sure it’s completely dry before adding the milk chocolate. Cook for 3 minutes, 50 degrees, Speed 2, or until the chocolate has completely melted.
- Pour the melted chocolate over the top of your slice and place into the fridge for 4 hours or until set.
Notes
- Biscuits - also known as cookies in the US. I generally use Arnotts Marie biscuits, but you can use any plain sweet biscuit variety you like.
- Sweetened Condensed Milk - choose full fat (not skim or light) sweetened condensed milk as it sets firmer. I like to use Nestle brand as I find it gives a better result than the home brand options.
- Store the Thermomix hedgehog slice in an airtight container in the fridge for up to 5 days.
- Freeze - in an airtight container for up to 3 months. Allow to defrost before consuming.
Lillian says
What could you use instead of chocolate gives me migraines
Robyn Bishop says
Gorgeous slice and easy to make. Similar to another person who commented, found it difficult to get the biscuits the right consistency. The thermomix either wants to make crumbs or leave in big pieces.
Lucy says
Hi Robyn, yes the Thermie can be tricky with biscuit sizes! If you'd like them a bit more uniform, then I'd try cutting them instead. xx
Caroline says
Great and easy recipe. Everyone loved it!
Lucy says
Fantastic!
Tania says
How long will this keep for?
Lucy says
Approximately 5 days in an airtight container or 1-2 months in the freezer.
Kerrie says
I made this recently for the Australia's biggest Morning Tea function at my church to raise money for Cancer Research and it was voted most popular slice! All credit to Thermombliss. Thank you!
Lucy Mathieson says
Yippppeee!!! That's so awesome!!
Loren says
Have already made this multiple times, and always goes too quickly!! Soo yum 🙂
Lucy Mathieson says
Hehehe it sure does!
Cassidy says
Very delish! I used Cadbury old gold almonds chocolate on top ?
Lucy Mathieson says
YUM!!!!
Jane says
Could I use dark chocolate?
Lucy says
Absolutely!!!
Jussi says
Thanks so much. Made this for my 3 year old's party and it was a big hit with kids and parents alike. Can this one be frozen please?
Lauren says
Oh that's great! This can't be frozen I'm sorry, the chocolate goes a little funny.
Rachel Hill says
Hands down the best hedgehog slice ever!
Thermobliss is the best Thermomix recipe website! All the recipes are so easy to use.
Can not recommend enough 🙂
Lauren says
Oh thank you so much Rachel, you are too lovely xx
Lesley says
The biscuit is always over 'smashed' when I blend it with the chocolate mix, even when using reverse, so there aren't any biscuit pieces left. Is this common or just me?
Lauren says
Hi Lesley, Maybe you could try mixing the biscuits on a lower speed? I hope this helps 🙂
Lauren says
Isn't is funny how we all know recipes by different names? I will have to check out the Nanaimo Bar - I'm intrigued!
Helene Meurer says
Yahoo, am pinning this one now! Here in Canada we call this type of treat "bars" not "slice" and one of the most popular is the "Nanaimo Bar"... too sweet for me, but sure is yummy! keep on mixing 🙂