Preheat oven to 175°C.

In a bowl add chocolate and butter.

MW or melt it on a double boiler.

Set aside to cool.

In another bowl mix together corn starch, baking powder, sugar and egg and beat until it makes a smooth batter.

Add the melted chocolate and mix to form a thick batter.

Divide it between six cupcake liners.

Top them with chocolate chips and bake them in the preheated oven for 12 minutes.

The top will be firm but the inside will be soft. But it is fine.

Remove from oven and set aside until it comes to room temperature.

Refrigerate for one hour before serving