Take 1/2 cup Toor Dal in a cooker. (Washed 10 minutes before)
Add 3 cup of water to the cooker, salt as per taste and 1/2 tsp turmeric powder. Cook until 3-4 whistle on low to medium flame. After 3 whistle, turn off the flame .
Add 3 tbsp oil in a kadhai/pan. Spread it evenly with a spatula. Once the oil is hot, add 2 dry red chilli. Stir and Fry on medium flame.
Add 1 finely chopped onion and fry for a few minutes until onion gets soft.
Once the onion gets soft, add 1 tbsp ginger garlic paste and saute with onion.
Add 1 chopped tomato. Mix it well. Cover and cook for 4 minutes. After 4 minutes, we will check and tomatoes have become softer, Stir and Cover and cook for 2 more minutes.
Add salt as per taste, 1/2 tsp turmeric powder, 1 tsp red chilli powder and mix well.
Add finely chopped coriander leaves. Mix it well.
Add boiled dal. Let it boil on high flame first and after a boil, turn the flame to medium and let it cook for a few minutes.
Add chopped coriander leaves and cover it. let it cook for a few minutes.
After 5 to 10 minutes, Pour the cooked Dal Tadka to a serving pan. Serve with roti and rice. Enjoy.