Steps
1. Preheat your oven to 200°C (400°F).
2. Roll out the puff pastry on a floured surface and cut it into a circle slightly larger than the serving dish.
3. Place the puff pastry into a greased ramekin or tartlet pan, pressing it into the edges.
4. Bake the puff pastry for 15-20 minutes until golden brown, then let it cool.
5. In a small saucepan, melt the dark chocolate over low heat.
6. In a mixing bowl, whip the heavy cream with sugar until soft peaks form.
7. Gently fold the melted chocolate into the whipped cream until fully combined.
8. Add ground ginger and cinnamon to the mousse mixture and combine well.
9. Fill the cooled puff pastry shell with the chocolate mousse and top with fresh blueberries.
10. Crumble gingerbread dough on top as a garnish (optional) and serve immediately.