a saucepan pour the milk, add the sugar and butter and stir over medium heat until combined.
- Remove the pan from the heat and add the dark chocolate. Stir with a spatula until the chocolate melts and mix everything.
- In a bowl add the puffed rice and cocoa powder and stir. Pour the prepared chocolate and stir until well blended.
- Using 2 tablespoons, pour the mixture on the lined pan with baking paper. Press the dough with a spoon to form a round biscuit.
- Let the biscuits rest at room temperature for 30 minutes, then transfer them to the refrigerator to firm
