Preheat your oven to 300°F.
Split the vanilla bean and scrape the seeds into a saucepan with the heavy cream.
Gently heat until it just begins to simmer.
In a medium bowl, whisk together the egg yolks and 5 tablespoons of sugar until well combined and light in color.
Slowly add the heated cream mixture to the egg mixture, stirring continuously to avoid curdling the eggs.
Strain the mixture to remove any solids.
Pour the custard mixture into ramekins and place them in a large, deep baking dish.
Add hot water to the dish, filling it halfway up the sides of the ramekins.
Bake for 30-40 minutes, until custard is set but slightly jiggly in the middle.
Cool for about 15 minutes, then refrigerate for a minimum of two hours before serving.
Sprinkle brown sugar over each custard and use a blow torch to caramelize it.