Keep steamer of dhokla or normal pot on boil.
Beat eggs and milk together till fluffy add custard powder and the rest of ingredients and beat well.
Caramelize two tablespoon sugar in a pot add vanilla essence as soon as u remove from flame, let it cool add the mixture and steam. Let it cool completely then unmould and chill.

NB: if you are using oven when caramel done pour on casserole and spread then pour the egg mixture and bake on 200 C
Same way if using small moulds.