Take a pan, pour in the cream and let it boil on a medium flame. Boil this for 2-3 mins until bubbles start to form on the sides.
In a separate bowl, add in the chopped chocolate and pour in the cream. Once the chocolate melts, whisk this mixture till it is smooth and combined well. Keep aside.
Next, put the crackers in a blender and blend till it forms nice crumbles. Combine this cracker crumbles and melted butter together in a bowl and keep it aside.
Grab the jars and start creating the dessert, initially add ¼ of the cracker mixture into the bottom. Next, add ¼ of the marshmallow fluff, on top of this pour ¼ of the chocolate ganache and top it with a few mini marshmallows.
Serve instantly for best taste!