Rinse and wash the eggplants and potatoes.
Cut the eggplants and potatoes into a circular disk shape about half an inch thick.
Add a little oil to a large saucepan and lightly fry or toast the eggplants and potatoes.
Line the fried potatoes and eggplants on a plate.
In a separate pan, add a little oil and add onions along with nigella seeds and roasted cumin seeds.
Fry the onions until translucent and add tomatoes along with spices.
Layer the fried eggplants and potatoes on the masala topping it off with some chopped scallions.
Cover the pot and let it simmer on low heat for about 15 to 18 minutes.
Open the lid and give it a good mix, add some chopped green chilies and scallions on top!