Preheat the oven to 325°. In a large bowl, whisk together all of the ingredients except the 5 teaspoons of sugar. Divide the custard between 5 brulee dishes.
Transfer the dishes to a cookie sheet tray. Fill up the tray until there is about ½ inch of water in it. Bake the dish at 325° for 25-30 minutes or until the center is set.
While the brulee is chilling, add the whipped cream and sugar to a standing mixer with the whisk attachment on high speed and whisk until stiff peaks are formed, about 3 to 4 minutes.
Add in mascarpone and whisk for 1 more minute and chill before serving. Add 1 teaspoon of sugar to the top of a crème brulee and move it around so that it is coated.