Hot Chocolate To Die For

12 oz fine chocolate
1 tsp butter
1/2 tsp vanilla
half-and-half
mini marshmallows

Melt the chocolate, butter and vanilla in a double boiler. When just smooth stir in the cream. Serve in the smallest coffee mugs you can find to all your friends. Top with freshly whipped cream, made from left over cream, and a mini-marshmellow.