Boil the kettle and chop dark chocolate into small chunks. Place in a small bowl and top with 2 tablespoons boiling water. Stand for a minute or so to allow the chocolate to melt. Stir until you have a lovely smooth glossy sauce.
Chop hazelnuts and divide between two small bowls / ramekins / tea cups / pretty glasses.
Slice cheese into 4 rounds, or scoop into chunks. Place one round in each of the bowls. Drizzle over half the chocolate. Top with the remaining goats cheese and drizzle over the remaining chocolate. Sprinkle with sea salt flakes (if using) and enjoy immediately.