1. Cook tomatoes and moong dal in 3-4 cups of water till the dal is cooked.
2. Saute the onions with olive oil.
3. Now add the onions along with the cooked tomato dal mixture, cool it for a while and blend till smooth. Strain it with a strainer.
4. The result is creamier soup.
5. Boil it again and add milk, salt and pepper as per taste.
6. For a thicker consistency, mix cornflour with some water to make a paste and add it to the soup.
7. Serve hot with croutons.

Courtesy: http://chefinyou.com/