Preheat your oven to 350 degrees F and prepare your donut pans (I grease mine with a little coconut oil but you can skip if you don't need to grease yours).
Add your ripe spotty bananas to your food processor and pulse, slowly and only a handful of times, until your bananas reach a well mashed texture. Empty the mashed bananas out of the food processor and measure. You want 1 cup. Return the 1 cup of mashed bananas to the food processor.
Add the remaining ingredients to the food processor and pulse on high for about two minutes, until everything is well mixed. You will want to stop and scrape the batter off the sides of the food processor and down toward the blade a couple times. Note: if you are using a blender, add the wet ingredients first, then the dry ingredients. You may need to stop and stir the batter a few times then continue blending.
Add your batter to the donut pans and fill each cavity about 3/4 of the way full. You should have 10 small donuts (my donut pan yields 3'' donuts so the amount of donuts you have will vary on the size pan you are using).
Bake for about 13-14 minutes. Check on the donuts around the 13 minute mark. The donuts are done when a knife inserted comes out clean. If you are using standard size donut pans which yield larger donuts, you will need to bake these longer.
Cool the donuts in the pans for about 5-10 minutes or so, and then transfer to a cooling rack. While the donuts are cooling, make your chocolate ganache.
Add your 1/2 cup canned coconut milk (use the thick cream on top) to a saucepan on the stove and turn the heat to high. Watch this very very closely. Next, as soon as the coconut milk starts to bubble, remove from saucepan from the heat and transder the coconut milk into a bowl. Now add the 1/2 cup of chocolate chips to the bowl with the hot coconut milk and whisk until the chocolate chips are melted and your result is silky smooth chocolate ganache. If it's too thick for your liking, just add an extra splash of coconut milk and whisk again.
Add the chocolate ganache to the donuts and top with chocolate chips/cinnamon/whatever you please! Enjoy!