This is one of the other easy dosas because you dont have to leave it overnight for fermentation. The same dosa can be prepared by using chana dal instead of moong dal.

What you will need:
1 cup urad dal ( black gram split)
1 cup moong dal ( green gram split)
4 green chillies
1" ginger
salt to taste

How to prepare:
Soak the urad dal and moong dal for 2-3 hours.
Grind both the dals. Add 2 of the green chillies and grind to make a smooth batter.
Chop the other 2 green chillies and ginger.
Mix it to the battter. Heat the flat pan, then grease it with oil and then pour the batter onto the pan. Cover and cook the dosa. Once the first side is done, pour a little oil adn flip the dosa. Fry on the other side.
Serve with any chutney.