In a mixing bowl, sift all the dry ingredients - whole wheat flour, baking soda, baking powder and salt for thorough mixing. Do not skip the sifting as we don't want lumps of baking soda or salt hiding somewhere in one spot.
Mash the over ripe bananas using a fork or potato masher to a smooth paste. Avoid using a blender
In another bowl, beat jaggery and softened butter with a whisk until fluffy and creamy. Brown color of the jaggery would have turned brownish white by now. This is an imp step
Now, add in the dry flour mix and fold gently using a spatula until just combined. Do not over mix. If you are using candied papaya bits, fold it in the end gently
Pour the batter into the prepared pans only up to half level to give enough room for the banana bread to rise or else when the batter rises, it might spill out during baking. Same applies to bundt-let tray also
Garnish with chopped walnuts. Quickly pat them down so they'll stick in the batter.
Place the pans on a baking tray in the middle rack of the oven. with at least 2-3 inches between them if using 2 pans as well as with the inside of the oven for even hot air circulation. Bake for 30-35 mins or until a tooth pick inserted in the center comes out clean. Check at 30 mins for done-ness. Avoid over-baking or it will become dry.
Once baked, remove the pans and let cool immediately on a wire rack.
After a few mins, lift the cake using the parchment ends and allow to cool off completely.
Slice and Serve warm or at room temp as is or with a scoop of vanilla ice cream
Do not open the oven door during the first 15 mins as it causes the rising dough to collapse.
Do not forget or delay cooling the cake on a wire rack right after pulling out of the oven.
Otherwise, due to the retained heat, cake start to sweat inside and end up soggy instead of fluffy.
If you happen to use the smaller variety of Banana, do double the quantity. 2 smaller Bananas (yelakki type) = 1 Robusta (Paccha Baale)
Brown sugar or cane sugar can be use in place of Jaggery powder.
leftovers can be stored in an airtight box in the refrigerator.