Here's another dosa that you can make a few minutes before breakfast, instead of worrying about soaking and grinding the previous night. I got this recipe from my aunt Jyothi Prabhu who adapted it from here.
1 1/2 cup oats [I used Quaker quick 1-minute oats]
1/2 cup rava (sooji)
1/4 cup rice flour or wheat flour
1/2 cup yogurt (curd), whisked
1/2 cup chopped onion
2 green chillies, finely chopped
Dry grind oats in the mixer (about 10 seconds). In a large bowl mix oats powder with the rest of the ingredients. Add enough water and mix well to remove lumps [I use a manual whisk]. The batter must be of thin buttermilk consistency. Let stand for a few minutes.
Roast on both sides. (You can refer Rice Flour Dosa for tips).
Please note that they take a long time to roast, so do not flip until one side is completely cooked, otherwise it can break.
Oats dosa tastes great with Mint Chutney.