1Break chocolate into pieces and place in slow cooker. Pour over condensed milk and add butter.
2Cook on low for 45 mins to an hour stirring every 15 mins.
3When chocolate mix is almost ready, crush the biscuits (either by hand or in a food processor), ensuring that the biscuits are consistant in size and not too fine.
4Mix through chocolate mix until fully combined.
5Prepare slice tin with baking paper and pour chocolate mix in, smoothing the top as much as possible.
6Refrigerate for up to 2 hours or until set. Slice and serve!
Submitted by Annette St Aubyn