Marshmallow fondant is already awesome, but if you add jello to it you can make it even more delicious while coloring it at the same time! Jello seems to mix in really well with the powdered sugar and gives good results for taste and look.
The Most Amazing Chocolate Cake is here. I call this my Matilda Cake because I swear it's just as good as the cake that Bruce Bogtrotter ate in Matilda. Moist, chocolaty perfection. This is the chocolate cake you've been dreaming of!