In a pressure cooker add oil and heat it.
Into it add sliced onions and saute till slight golden brown.
Into it add slit green chillies, curry leaves and saute for few seconds.
Into it add ginger garlic paste and saute until raw smell disappears.
Add chopped tomatoes, turmeric powder, mix and cook for few minutes.
Strain and add the soaked masoor dal into the cooker.
Mix the whole mixture well.
Cook the whole mixture for 5 minutes on low flame and stir in between.
Add water and mix well.
Cover the lid and pressure cook the dal until it is cooked well or pressure cook it up to 3 whistles on medium flame.
Reduce the steam.
Add salt as per taste, add freshly chopped coriander leaves, mix it up well.
Cook the dal for about 5 minutes on low flame.
Serve the dal with hot roti or paratha!!!