Melt the butter, sugar and dates together in a pan over a low heat till it all comes together
Remove from heat and stir in the Rice Krispies
Press into a lined pan
Melt the chocolate and add the 20g of butter, stir till melted
Pour over the Krispies base
Sprinkle with salt and leave to set in the fridge
Cut into bars and store in an airtight container
