Preheat the oven to 350 degrees
Grease a cookie sheet and set aside
Pulse banana, coconut, and 1/2 T cocoa for a few moments in a food processor until very well combined
Shape into discs, then set on the greased cookie sheet and bake in the preheated oven for 25 minutes or until golden
As cookies cool, melt coconut oil in small bowl
Stir in cocoa powder and Stevia
Drizzle melted chocolate over cookies with spoon
Place cookies in fridge so chocolate can harden