Preheat oven to 355 degrees F (180 degrees C).
In a bowl of your electric mixer or with a fork, mash up the Banana (2) with a Salt (1 pinch) and Granulated Sugar (100 gram).
Add the Coconut Oil (60 milliliter) and Water (200 milliliter) and mix well. Next fold in All-Purpose Flour (200 gram), Unsweetened Cocoa Powder (50 gram), and Baking Powder (1 teaspoon).
Pour the batter into a 20 cm cake pan lined with parchment paper, cover the top with Vegan Dark Chocolate Chips (1/3 cup).
Bake in the preheated oven for 40 minutes. Remove from the oven and let it cool down.
Serve immediately, or store in the fridge for 4 to 5 days.