If you want add vegetables add carrot/small half capsicum (because some time capsicum will give you bitter taste)/peas/beans ( we can cut in long or small pieces).
Wash the methi leaves and drain the water completely and keep aside.
Heat oil or ghee in the pan and add garlic paste and fry till light brown color adds the green chilly also.
Then add onion, turmeric powder and fry for some minutes then add tomatoes (if want add vegetable pieces you can add)stir for some minutes then add methi leaves mixed it well. Cook for 5 minutes (with the small flames).
Then red chilly powder, biryani powder still - fry for 5 to 8 minutes.
Add cooked rice and fry well for another 5 minutes.
Then fry the cashew nuts and grapes in ghee separately add them to the methi rice.