Mash the potato and add salt, chopped onion and green chiiles.

Heat oil in a pan and add nigella seeds. Allow them to splutter.

Now, add the mashed potato. Add turmeric powder and garam masala powder. Stir for around 5 minutes on medium flame.

Remove it from the pan and keep aside.

Cut the hard edges of the bread slices and soak them in water. Remove immediately and press to drain the water from the slices.

Stuff one bread slice with potato and cover with another slice. Press with the help of your palm to make round ball. Repeat the process to make the other balls.

In a bowl, mix gram flour, bread crumbs, salt and chilli powder. Add required water and make a thick solution.

Heat oil in a pan. Dip the bread balls into the gram flour solution and pour on the heated oil.

Deep fry till they turns golden brown.

Remove from the oil and serve hot with chopped onion and green chillies.