• 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.

Thermomix 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.
• Roughly chop SIX of the Tim Tams into large pieces and set aside.
• 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.
• 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.
• Add the biscuits and coconut to your Thermomix Bowl and mix for 10 seconds on speed 4 REVERSE or until the mixture has 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 chocolate pieces. Cook for 2 minutes on 50 degrees speed 3 or until the chocolate has completely melted.
• 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.