Melt chocolate and let cool.

Place the marshmallow cream, two-thirds of the confectioners' sugar, melted chocolate, shortening, and half of the half-and-half in a mixing bowl.

Beat with an electric mixer until smooth. Alternately add remaining confectioners' sugar and half-and-half until desired level of sweetness and consistency is attained.

Easy on the half and half as it may become to runny.