First we need idli/dosa batter made with soaked rice, soaked urad dal and methi seeds. Heat oil in a pan, temper mustard seeds. Once they crackle, add curry leaves, urad dal, green chillies and salt. Fry this for 2 minutes. Add this to the batter and mix. Add chopped onions, cilantro and turmeric powder as well. Heat the appe pan, add a few drops of oil in each mold. Pour a spoonful of the batter or until 3/4 of the paniyaram mold. Cover the pan and allow the batter to cook for 2-3 minutes on a low or medium flame, turn each paniyaram with a wooden skewer or spoon and cook until crisp, turn once or twice for even cooking if required. Repeat same for rest of batter.