Lay the banana slices out on a cookie sheet lined with parchment or wax paper. Put in the freezer to cool and harden (about an hour)
2 medium bananas
In a microwave safe bowl, heat the chocolate chips and coconut oil in 30 second intervals, stirring until smooth. Allow to cool a bit.
1 cup dark chocolate chips, 2 tbsp coconut oil
Dip frozen banana slices in the chocolate, coating on all sides. Use a fork to lift them out of the chocolate and drain off the excess chocolate.
Place the dipped slices back on the parchment paper and return to the freezer.
Serve frozen, or soften in the refrigerator for a few minutes before serving (you do NOT want them to defrost completely or you end up with chocolate shell covered mush.)