Heat the Oil: Place a pan on the stove and heat 3 tablespoons of oil.
Add the Tempering: After the oil is hot, add 1 teaspoon of mustard seeds and 1 teaspoon of cumin seeds. Let them crackle. Add 1 pinch of asafoetida and 8 curry leaves.
Fry the Onion: Add 1 chopped medium onion. Sauté it until it turns light golden brown.
Add the Paste: Stir in 1 teaspoon of crushed ginger, garlic, and green chilli paste. Sauté well.
Cook the Tomato: Add 1 chopped medium tomato and cook until it becomes soft.
Mix the Dry Spices: Lower the flame. Add 0.5 teaspoon of turmeric powder, 1 teaspoon of Kanda Lasun masala, 0.5 teaspoon of garam masala, and 1 teaspoon of cumin-coriander powder. Add salt to taste. Sauté the spices for 1 minute.
Add the Vegetables: Put the chopped eggplant, potato, and green peas into the pan. Mix well so the spices coat the vegetables. Sauté for 1 minute.
Add Water and Cook: Pour 1 small glass of water. Cover the pan with a lid and cook on medium flame for 5 to 7 minutes.
Add Peanut Powder: Open the lid and check if the vegetables are soft. Add 1.5 teaspoons of roasted peanut powder and 2 tablespoons of chopped coriander leaves. Mix everything nicely.
Final Steam: Cover the pan again and cook for another 5 minutes to let the flavours mix perfectly. Your Satara Vangi Batata Vatana bhaaji is ready to serve!