Melt the chocolate in the slow cooker with the condensed milk. Set your slow cooker on high and do not put the lid on. Stir occasionally.
300 g extra dark chocolate, 150 g milk chocolate, 397 g can of condensed milk
Once it is smooth and silky and melted together, you can take it out. This took approximately 45 minutes in my slow cooker.
Sieve in the icing sugar and beat well.
100 g icing sugar
Pour the mixture into a baking tray or loaf tin lined with baking paper. Smooth the top of the fudge with the back of a hot metal spoon. Scatter the chopped candy canes on top.
3 candy canes
Put the tray or tin in the fridge to chill for a couple of hours, for the fudge to set.
Remove from the fridge, and use a sharp knife to cut the fudge into pieces.
Notes
If you want to make it for gifts, it will last for approx. 2 weeks in the fridge in an airtight container.