To prepare the chocolate and puffed rice sweets, cut the milk chocolate into small pieces.
Melt it in a bain-marie, adding a little butter.
Pour the melted chocolate over the puffed rice and mix them well to coat each grain with the chocolate.
Fill the silicone molds with the mixture and leave to rest in the fridge for at least 20 minutes.
Once the time has passed, enjoy the treats!