Preheat oven to 180 degrees. In the bowl combine mashed banana, yogurt and coconut sugar.
In another bowl whisk protein powder, flour, cacao powder, reishi, salt and baking powder. Pour coconut oil over and stir briefly. Lastly add dry mixture to the wet ingredients and stir until completely homogenous.
Fill your baking molds to 2/3 of the height and bake in preheated oven for 18 minutes or until a toothpick inserted in the middle comes out clean.