Preheat oven to 350F. I used a 8 inch by 5 inch nonstick loaf pan to bake this bread, since my pan was nonstick I did not need to spray or line it with parchment paper. If you are using a regular loaf pan, line it with parchment paper with bit of an overhang so that the loaf is easy to take out.
In a large bowl, add the bananas, raw sugar, ghee and milk. Whisk very well for 2-3 minutes until you all the raw sugar granules have dissolved.
Place a sieve on top of the bowl and add besan, cocoa, baking soda and salt. Sift the flour mixture over the wet ingredinets. Do not skip sifting coz besan is usually lumpy and it will make the bread batter lumpy.
Add the cardamom powder. If using nuts, add them right now. Using a soft spatula, gently fold and mix everyrhing together until its cocoa color. Dont over mix.
Transfer the batter to the loaf pan and smoothen the top using a flat spatula. Scatter chocolate chunks on top.
Bake for 44-49 minutes or until a skewer inserted in the center of the loaf comes out clean. I baked mine for 45 minutes. Note that the baking times will differ depending on the size of baking pan as well as oven.
Once baked, let the loaf cool in the pan for 10 minutes. Pull out of the pan and transfer to a cooling rack and let cool down completely.
Slice using a sharp knife and enjoy. You can store leftovers in fridge for 2 days or freeze upto 3 months.