Preheat the oven to 180°C or 350°F. Spray the tartlet tins with some baking spray and set aside.
Divide the chilled dough into 8 equal portions.
Open each piece of dough into a circle, slightly bigger than the tartlet tin, between two sheets of cooking paper. Do not add any additional flour.* Place the dough over the tartlet tin and gentle press it in. Remove any excess dough from the edges by rolling over with the rolling pin. Poke several fork holes at the bottom.
Blind bake** the tartlets for about 15-20 minutes at 180°C.
Once cooked let them rest for a few minutes.
While the tarts are cooling down melt the chocolate. Brush the chocolate over the tart base and let them cool down completely until the chocolate sets.