Firstly knead a soft dough and make 2 chapatis for sandwiches. Then boil the potatoes and mashed it than add chopped onion, green chilli, coriander, grated carrot, red chilli powder, chat masala and salt. Mix all together well

Now make a besan batter. Take a bowl add besan, chopped onion, tomato, grated carrot, green chilli, coriander, red chilli powder, turmeric powder, salt, chat masala and water for a medium consistency. Now take 1 chapati put potato masala over it and wrap with another chapati

Now put besan batter over the chapati, take a tawa grease with oil and put chapati over it, grease oil from all sides of chapati, crisp it than turn the chapati and spread besan batter over the chapati and crisp it.