Take bananas mash it nicely then add jaggery,blend it then add milk and whisk it nicely use blender then add oil mix again add flour mix no lumps should form

Add baking soda,baking pow, vanilla essences you can add dry fruits chopped it's optinal grease the pan and bake in oven or cooker I had bake in cooker it takes 45 minutes your spongy sugar free jaggery cake is ready