Soak rice grains for 1 hour. Remove th ewater from the rice , you can also spread the rice on a thick cloth so that it soaks water. Grind a fine flour of this rice.
Mix rice flour and Suji in a big utensil. Grind coconut and sugar then put it in the utensil and mix well.
Mash the bananas properly and put in the mixture. Also add Elaichi, followed by water and prepare a mixture thick like that of Idli. Beat the mix properly with a hand blender and keep aside for 30 minutes.
Mix Eno salt/baking powder to the mixture(Personally i feel eno salt make the mixture more puffy).
Place Appa Maker on the gas and heat it. Pour less than 1/4 tsp oil in all molds(you can also cook without any oil), put mixture in the molds with a spoon filling only half of it. Keep a low flame, Appam will puff up in no time and fill the mold completely. Turn over Unni Appam when its lower layer turns brown and cook till the other side turns brown.
Take out the cooked Unni Appam in a plate and cook the other Unni Appam in this same way.