Melt the dark chocolate by placing squared pieces into a metal mixing bowl, and placing that bowl over a boiling pot of water. The steam should melt the chocolate. There should be no direct heat or else the chocolate will burn. Take a tablespoon of dark chocolate and place it in a small bowl. This will be your for RIP decor. Keep aside.
Place enough granola in the larger melted dark chocolate mixing bowl, to cover 6 of of your serving cups (only as the final, top layer). Mix throughly
Start by layering your serving cups with whipped yoghurt, then a layer of packet granola, and repeating until you reach the top
Add the dark chocolate covered granola as the top layer
Using the toothpick, write RIP on the mini digestives with the tablespoon of melted dark chocolate you kept aside
Decorate the serving cups with the digestive RIP and gummy worm
Serve immediately, or the chocolate will freeze and it will be hard to eat.