In a small sauce pan, gently heat on the coconut oil until melted. Set aside.
With the back of a fork, mash your bananas. Set aside.
In a mixing bowl, whisk together the egg and cooled coconut oil. Add the mashed bananas and combine the flour and baking powder together. Using your spatula, gently add the chocolate chip to the mixture. IMPORTANT: Do not overmix.
Bake for 15 minutes at 350F/180C. (Every oven heats differently, monitor your cookioches from 12min). It is ready when the toothpick inserted into the center comes out almost clean.
Once your cookioches are out of the oven, let them cool down for about 10min. Then, Unmold, Serve and Enjoy warm! Bon Appétit!