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Tim Tam Hedgehog Slice

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I’m just going to come out and say it right at the beginning, this Tim Tam Hedgehog Slice is quite possibly one of the most indulgent recipes I’ve ever made!

Tim Tam Hedgehog Slice

Hedgehog Slice is one of my favourite slice recipes simply because it reminds me of attending birthday parties when I was a kid – yep a random memory I know!  While I LOVE my Hedgehog Slice recipe, as you know I can never resist trying something new and was keen to see how adding Tim Tams to the mixture would turn out.

Tim Tam Hedgehog Slice

I guess I should have realised that you really can’t go wrong when you add Tim Tams to anything, after all even if it turned out to be a big gloopy mess, it was still going to taste pretty amazing!  It took so much self control to just try one small piece of this slice (for research purposes of course!) and it took even more self control to make sure all of the Tim Tams ended up in the recipe, especially since I used TWO packs – as you can see the boys didn’t have as much self control as me!

Tim Tam Hedgehog Slice

This slice is everything a special dessert or treat should be: rich, indulgent and full of chocolate.  Because you can never have enough Tim Tams, I used 1 1/2 packs in the slice itself and then roughly chopped the remaining six Tim Tams to sprinkle over the top of the slice to make sure you get plenty of Tim Tams with every single bite of this slice.

When making this Tim Tam Hedgehog Slice, make sure that you use a tin which has quite high sides (mine had 8cm high sides which gave me plenty of room) as it really is a super sized slice. You also don’t need a food processor or Thermomix to make this recipe, simply crush the plain biscuits with a rolling pin and roughly chop the Tim Tams – too easy!  I also made sure that I still had some large ‘chunks’ of Tim Tams when chopping up the biscuits for the inside of the slice, as I wanted to be able to bite through pieces of Tim Tams when I was eating this.

Tim Tam Hedgehog Slice

Tim Tam Hedgehog Slice
Print Recipe
4.36 from 17 votes

Tim Tam Hedgehog Slice

Prep Time30 mins
Cook Time5 mins
Total Time6 hrs 35 mins
Servings: 20 pieces

Ingredients

  • 250 g of plain biscuits - Marie or similar
  • 2 x 200g packs of Tim Tam Biscuits
  • 200 g of butter
  • 3 tbsp of cocoa
  • 4 tbsp of dessicated coconut
  • 1 x 395g tin of condensed milk
  • 200 g of milk chocolate

Instructions

  • Line a 20cm x 20cm square cake tin (which has high sides) with baking paper. Make sure you leave plenty of baking paper hanging over the edges to help you remove the Tim Tam Hedgehog Slice once it has set.
  • Roughly chop SIX of the Tim Tams into large pieces and set aside.
  • Place the plain biscuits into a food processor and blitz until they have just broken up, then add the remaining whole Tim Tams (approximately 1 ½ packs) and blitz for 5 seconds or until they have broken into large chunks - alternatively you can simply crush the plain biscuits with a rolling pin and roughly chop the Tim Tams with a large knife.
  • Place the crushed biscuits into a large bowl and set aside.
  • Pour the condensed milk into a small saucepan and add the butter and cocoa. Cook over a low heat stirring occasionally until the butter has melted and combined with the other ingredients.
  • Pour the melted ingredients into the bowl with the crushed biscuits and add the coconut. Working quickly, use a large metal spoon to mix the ingredients together.
  • Pour the mixture into your prepared tin and flatten the surface with the back of a spoon.
  • Break the milk chocolate into squares and place it into a microwave safe bowl. Cook in the microwave on high for 30 second spurts (mixing in between) until it's just melted. Pour over the top of the slice and sprinkle the Tim Tams you set aside earlier over the top. Place the Tim Tam Hedgehog Slice into the fridge for 6 hours (preferably overnight) to set before cutting into squares.

Notes

You can use a rolling pin to crush the biscuits instead of a food processor if you prefer.
You can also make this slice in a 18 x 28cm slice tin.
Some of the Tim Tams will melt when you add the melted butter mixture - this is ok!

Thermomix Tim Tam Hedgehog Slice Recipe

  1. 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.
  2. Roughly chop SIX of the Tim Tams into large pieces and set aside.
  3. Place the plain biscuits into your Thermomix bowl and crush for 3 seconds on speed 4. Add the Tim Tams and crush for a further 3 seconds on speed 4 – use your spatula  to roughly break up any large biscuits and pour into a separate bowl and set aside until needed.
  4. Pour the condensed milk into your Thermomix bowl and add the butter (cut into 3cm pieces) and cocoa. Cook for 2 minutes on 60 degrees, speed 1 or until the butter has completely melted.
  5. Add the biscuits and coconut to your Thermomix Bowl and mix for 10 seconds on speed 4 REVERSE or until the mixture has combined.
  6. Pour the mixture into your prepared slice tin and flatten the surface with the back of a metal spoon.
  7. Clean your Thermomix Bowl and make sure it’s completely DRY before adding the chocolate pieces. Cook for 2 minutes on 50 degrees speed 3 or until the chocolate has completely melted.
  8. Pour melted chocolate over the top of your slice and sprinkle the crushed Tim Tam pieces over the top before placing it in the fridge for 6 hours (or preferably overnight) to set. Cut into pieces and serve.

Enjoy!

Comments

  2. Ashleigh says

    I made these the other week and they were AMAZING!
    The recipe was really easy to follow and took no time at all to make.. or eat!! Thank you for sharing 🙂

    Reply

  4. Tammy says

    Yum yum and more yum yum noises lol hubby and I made tonight and loved it. Can not wait until morning tea tomorrow hahahah Thank you for easy to make recipe. I went through years hating Tim tams because as a child I would get called that and I hated it. Now I can enjoy them all blinged out “more is more” lol Thank you, Tams lol

    Reply

  6. Kay says

    My son was required to bring two packets of TIm Tams for his contribution to his cricket sides afternoon tea. I didn’t think that was very classy so I searched and found your recipe which uses two packets of Tim Tams. We made it and it was such a hit that he is now required to bring it to every game where they are required to provide afternoon tea. Everybody loves it and the captain jokes that it guarantees his place in the side. This slice is perfect for any afternoon tea and anyone who loves Tim Tams. Easy to make and eat.
    Five star all the way.

    Reply

  8. Kerryanne says

    5 stars
    Hi Lauren, just found your blog on Pinterest when this delicious recipe popped up in my feed. I’m a fellow blogger from Brisbane and look forward to checking out your recipes… especially your recipes converted to Thermomix.
    Merry Christmas,
    Kerryanne

    Reply

  9. Michelle says

    This slice taste great but for some reason mine came out very sticky and does not appear to be as set as a normal hedgehog slice like in your pictures.

    Reply

    • Lauren Matheson says

      Hi Michelle. I’m sorry to hear your slice hasn’t set quite right. It may come down to the brand of sweetened condensed milk that you used? I normally use Nestle. I hope that helps 🙂

      Reply

  10. Brenda says

    I’m a follower from Canada, do you know what the replacement for the Marie biscuits and the Tim Tam biscuits would be from here. Unfortunately those biscuits are not available here

    Reply

  12. Lillian Moulton says

    Made this many times for grandchildren for a treat. I beleive they liked it. So I will make it over and over again

    Reply

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