Mix chenna and sugar and knead till smooth.
Heat a heavy-bottom or nonstick pan. Add the ghee and the paneer mixture. Cook on low flame. Stir continuously.
Melt the Cadbury chocolate in a double-boiler or in a microwave.
Add to the chenna mixture. Cook till the mixture leaves the sides and comes together like dough. Remove from heat.
Knead again till it’s smooth or blend in a blender.
Break the dough into small balls. Shape them with a mould or press gently into shape with hands, and place pistachios in the middle.
Your Cadbury Choco-Sandesh is ready.