Melt the chocolate and butter in a bowl in microwave oven for 3 minutes, checking once in between.
Crush cornflakes with a rolling pin and put into a bowl. When the chocolate has melted whisk it till smooth. Dry roast sesame seeds and mixed nuts in a non-stick pan.
Grease an aluminium tray well. Add cornflakes and rice cereal to the pan and mix. Add cinnamon powder and mix.
Reduce heat and add honey. Switch off the heat and mix everything well. Let the mixture cool slightly.
Add chocolate-butter mixture gradually, mixing continuously. Transfer the mixture into the prepared tray and level the surface.
Set aside to cool. Cut into bars and serve.