In a bowl, mix the oats with all the other ingredients up to and including the salt. In a blending cup, blend the dates, water, coconut oil and vanilla until smooth, mix into the oats. Spread the mixture into a square (approx. 2 cm thick) on a baking tray lined with baking paper, leave to stand for approx. 30 mins.
Approx. 25 mins. in the centre of an oven preheated to 180°C. Remove and leave to cool in the tray. Cut into 8 equal bars.
Place two-thirds of the chocolate in a thin-sided bowl and suspend over a gently simmering bain-marie, ensuring that the bowl does not touch the water. Melt the chocolate, stir in the remainder of the chocolate.
Coat the bars with the chocolate, sprinkle with the nuts and cocoa nibs.