Grease and line an 18 x 28cm slice tray with baking paper.
Roughly chop 3 of the Mars Bars and place in Thermomix bowl along with the butter and golden syrup/
Cook for 3 minutes, 60 degrees, speed 2. Scrape down the sides of the bowl.
Chop the remaining Mars Bar in to small pieces and add it along with the rice bubbles to the Thermomix bowl. Mix for 15 seconds, speed 2, REVERSE or until completely combined.
Transfer the mixture to the prepared slice tin and gently press down to smooth the surface.
Add the chocolate to a clean Thermomix bowl. Cook for 3 minutes, 50 degrees, speed 2 or until melted.
Pour the melted chocolate over the slice and place into the fridge for 2 hours or until set.
Once set, allow the slice to sit at room temperature for 20 minutes before cutting into pieces.
Notes
The same quantity of fun sized Mars Bars can also be used.
Any type of puffed rice cereal can be used for this recipe.
Either chocolate melts or a block of chocolate can be used.
Different sized/shaped baking dishes can be used for this recipe, please note this will change the depth of the slice and also the time it takes to set.
We like to remove the Mars Bar Slice from the fridge about 20 minutes before slicing, as this makes it less likely for the chocolate layer to crack when cutting into small pieces.
We also recommend using a small and slightly serrated knife to get those perfect little slices.
To store, place in an airtight container and store in the fridge for up to one week.