They’re regular cupcakes, iced with regular icing and the mum petals are just marshmallows! Just cut mini marshmallows diagonally and put them in a container or Ziploc bag of colored sugar and shake them up. The sugar only sticks to the cut sides. We found that if you let them sit for a little while, they poof back up to a nicer shape after being squished when you cut them. Arrange the marshmallow halves in a circular pattern starting from the outer edge and working your way in.