In a small bowl mash your banana and mix in cocoa, (optional) nut butter, salt, vanilla until smooth. You can add sweetener to make it more sweet. Pour this into your cup.
Sprinkle with granola and top with melted chocolate (I use the microwave 20 sec at a time and stir with a fork).
Let chocolate set in the fridge or freezer. Dig into the magic shell action and enjoy!