In a bowl sieve all the dry ingredients except jaggery. Then take a seperate mixing bowl into that add melted butter (room temperature not too hot) and jaggery powder mix both together.

After that, add all the remaining wet ingredients one by one. Later, add the dry ingredients little by little give a gentle mix (cut and fold method).

To bake the cake, prepare the baking tray by applying some butter and dusting it with either plain flour or some cocoa powder.

Now, pour the batter to the baking tray and bake it in the preheated oven for about 40mins @180 degree. (baking time may differ according to your oven)