You can choose to melt the chocolate in a bain-marie or in the microwave (to speed up the times)... Reduce the chocolate into small pieces and divide into two parts (100 grams for the base and 150 grams for the bars), put in two bowls.

Let's start with the 100 grams for the base; if you decide to use the microwave, the advice is to pay attention and, to prevent the chocolate from burning, set the time, starting from 30 seconds to 500 watts and add 10-15 seconds each time, checking each time if the chocolate is melted, stirring with a fork.

If, on the other hand, you prefer to melt it in a bain-marie, heat the water on the stove and then place the bowl with the chocolate inside, stirring occasionally until completely melted.

Cover a 15 * 20 cm pan with a sheet of cling film, spread it out carefully, pour in the 100 grams of melted chocolate and level; meanwhile, melt the other 150 grams of chocolate as explained above.

After having melted the other 150 grams of chocolate in the microwave or in a double boiler, mix it with a fork and add the puffed rice, little by little until it is completely amalgamated with the melted chocolate.

Pour the puffed rice previously combined with the chocolate into the pan and level. Place in the fridge to let it harden (about two hours).

Notes and tips You can keep the puffed rice and chocolate bars in an airtight container for a few days.