Heat cream over moderate heat and add sugar. Stir constantly until sugar is dissolved and add vanilla. In a separate bowl whip the egg yolks. Add the cream/sugar mixture to the yolks and pour into individual ramekins. Place the ramekins in a hot water bath in a large baking dish. Bake in a 300 oven for 30 minutes. Cool for 2 hours and top with brown sugar. When ready to serve, place the ramekins under the broiler for two minutes to caramelize the sugar.
Makes 30 3-½ ounce servings.