Double boil the butter and chocolate or microwave it for 30 seconds. Mix both together to form a chocolate sauce.
Mix coffee powder in hot water and keep aside.
Beat the eggs till light and fluffy for about three minutes. Add the sugar till creamy, for two minutes.
Add the melted chocolate-butter mixture and coffee, mix well.
Fold in the banana flour with light hands. Do not over mix the batter.
Pour the batter into a parchment lined baking tray. Throw in the Choco chips. Bake in a preheated oven at 160 degree Celsius for 30 minutes.
