We can use the idli dosa batter itself for uttapam also. The batter should be slightly thick so do not add water.Chop onions finely, if using small onion just slice each onion, keep your ingredients ready.
The dosa tawa should be hot. Drizzle water to check it should bubble like this. Wipe off with a cloth.
Now dosa tawa is ready - add 2 ladles batter to the tawa.
Spread it slightly only. We need slightly thick uttapams.
Now uttapam is ready to cook.
Sprinkle chopped onion to fill the topping.
Add sliced green chillies.
Drizzle oil at the sides and also on the top. Add oil generously.
Let uttapam cook for 2 mins in low medium flame. I usually do not cover and cook, if you prefer you can cook covered.
While it is cooking slightly press the topping with a dosa ladle.
Flip over and press it slightly for the onions to get roasted. Cook for 1-2 mins in low medium flame.
Crisp Onion Uttapam ready!