Break up chocolate and place all ingredients except the bananas into the slow cooker and cook on low for 1.5 - 2 hours or until it is a smooth runny consistency and stirring every 15 mins.

Mix in the the chopped bananas and place in a square cake tin lined with baking paper and place in the fridge until set, it should be firm to touch.

Remove from cake tin and cut up into squares. Enjoy!