Wash and soak dal in the pressure cooker with 11/2 cup of water or till the dal is fully covered along with 1 teaspoon of oil and ¼ teaspoon of turmeric powder.
Pressure cook the dal for 2-3 whistles or until the dal is cooked completely. It should be very soft and mushy.
Once the dal is cooked, with the help of back of a wooden spoon mash it properly. Keep aside.
Heat a non-stick pan with oil, add mustard seeds, urad dal and cumin seeds. When they crackle, add asafoetida along with curry leaves.
Add chopped onions along with slit green chillies, salt and fry till the onion’s changes colour.
Then add chopped tomatoes with turmeric powder, chilli powder and cook till they become soft.
Next, add the cooked dal along with ¾ cup of water and cook for 5 minutes on low- medium flame. (Adjust water according to your desired consistency)
Add coriander leaves and turn off the flame.
Transfer the dal into a serving bowl and enjoy with steamed rice by adding a drizzle of ghee.