Using a blender, make a smooth paste of the ripe bananas.
Next, transfer the banana paste into a bowl. Add the coffee powder, sugar, and egg. Give it a good mix.
Add the flour next and fold everything together. You should end up with a mixture that has a flowy consistency.
Next, heat ghee in a pan and add the cut banana pieces.
Transfer the prepared mixture over the banana pieces. Make sure the bananas are covered by the mixture.
Cover the pan with a lid and cook the mixture for 10 minutes on a low flame. Don't use high heat as it will burn the bottom.
Next, flip the cake and cook the other side as well for 8-10 minutes. You can use a toothpick to check if the cake is cooked inside.
Serve as a dessert after it comes down to room temperature.