Using mixer grinder/ blender, add oats, rice flour, semolina, and salt.
Grind it to fine powder.
In a mixing bowl add ground flour and water. The batter has to be in the running consistency (similar to Rava dosa batter).
Keep it aside for about 5 minutes.
In the meantime, heat dosa pan/skillet over the stove.
Grease and drizzle the pan with 1/4 teaspoon of cooking oil.
Take 1/3 cup of batter and hold it about 8 inches away from the pan. And start pouring evenly in the circular motion. And make sure the surface of the pan covers with the batter evenly with the same thickness.
Sprinkle chopped cilantro(but adding coriander leaves is optional). Drizzle half a teaspoon of oil over the batter.
Keep the stove in medium to slow flame. Allow it to cook and becomes crispy.
Once the dosa starts becoming golden brown in color, flip and continue to cook on the other side.
Once it turns golden brown on the both the sides, remove it from the pan and serve hot.
Serve along with chutney, sambar, tomato chutney, Idli powder, or chicken curry.