The night before, or at least 4 hours before, cut a banana into slices and place them in the freezer inside a freezer bag. The next day, or after 4 hours, blend the frozen banana slices until a thick consistency is obtained. Meanwhile, melt the chocolate with the coconut oil in the microwave or in a bain-marie. Once melted, pour the chocolate over the pureed banana, and add some chopped pistachios, as much as to taste.
Place it in the freezer for 5 minutes and when ready you will get a banana gelato with a thin layer of crunchy chocolate on top!
