Food blogging makes you try everything and make you aware of many things. Kollu or horsegram was totally unknown to me during my childhood. After reading its health benefits, I have bought it into regular use at my place. My friend had once given me kollu idlis long time back and I had loved it. I wanted to try it since then and so I did after a long time. My friend had made them by adding the ground kollu paste into the regular idli batter. They were soft and good. So you can do the same or else you can follow the recipe I have used below.
Serve with chutney or sambar and it becomes a nice filling brunch actually. I had served with a side dish made with small onions which was quite good. Will try to take pictures and post the recipe for the side dish next time.