Blend the banana nicely using a blender
Add rice flour, wheat flour, baking powder, brown sugar, cardamom and blend it together
Add sesame seeds
The consistency of the batter should be little thicker
Heat the paniyaram griddle
Add few drops of oil to each hole and pour the batter
When the edges turns golden brown flip it
Allow it to cook on medium heat for another couple of minutes.
If the heat is too high, the outside will get browned up too fast before the inside is cooked
When unniyappam is done, it is like a ball and comes out easily from the griddle
Ready to serve