Mash the bananas in a bowl
Add water, oil, sugar, and vanilla essence to it.
Mix it nicely till everything is combined.
Chop the chocolate and melt in a double boiler or microwave for 10-15 seconds.
Place water in a vessel and place another vessel on top of it and melt the chocolate.
Add the banana mixture to melted chocolate.
Mix till chocolate is combined with the banana mixture.
Add wheat flour, salt and baking powder to it
Mix them without lumps and add ¼ cup choco chips to it.
Fold the batter to mix the choco chips
Grease the baking tin with butter and dust with little flour.
Pour the batter to baking tray and tap to release air.
Sprinkle rest of choco chips on the top
Preheat the air fryer to 180°C and bake in the same temperature for 15-18 minutes
Remove from air fryer and cool the Brownie completely in wire rack and slice them.
Enjoy with ice cream or chocolate sauce or powdered sugar drizzled on the top.