In a pot add oil, heat oil now add onion slices in it mix it continuously until onion is golden brown in colour..let it cool... Now add onion in grinder and grind it....

Now in a onion leftover oil add chicken and ginger garlic paste mix it and cooked it until chicken is white in colour now add shan korma masala and yoghurt mix it...

And cooked it until chicken is tender(if chicken is not tender then add water in it and cooked until it tender) In add brown onion in it mix it and cook it for 1 minute now our korma is ready....