Mix the cream and vanilla bean together in a double boiler. Heat the mixture for 10 to 15 minutes and stir in the chocolate. Remove the vanilla bean.
Whisk the egg yolks and sugar together in a mixing bowl. Slowly pour the chocolate cream into the egg mix, continuously whisking. Place the bowl over simmering water until the cream mix thickens and coats the back of a spoon, about 6 to 8 minutes. Pour into 4 (4-ounce) custard dishes. Place in a large baking pan and add enough water to come up halfway up the sides of the cups. Bake until the custard is set, about 1 hour. Remove from the water and cool. Cover and refrigerate. Sprinkle 1 tablespoon of sugar on top of each one and with a brulee torch, caramelize the top and serve.