Quick to prepare, elegant, and so popular you may want to double the recipe.
Combine the chocolate chips, sugar, egg substitute, vanilla, and liqueur, if using, in a blender. Heat the milk just to the boiling point (but do not boil) and add to the blender. Blend all the ingredients until smooth, about 1 minute on high. Pour into 4 custard cups and refrigerate for at least 6 hours before serving. If desired, garnish each cup with fruit or nuts.