This recipe allows you to make a melt-in-your-mouth fondant au chocolat with just six ingredients and a five-minute preparation time. It's perfect as a Valentine's Day gift or a treat for yourself. When freshly baked, the chocolate oozes out from the center, and after chilling overnight, it develops a rich, gateau chocolat-like texture. Just before serving, warm it slightly in the microwave and add ice cream to enjoy the luxurious taste of a hot, melting fondant au chocolat.