Heat 2 tablespoon butter to the same pan the chicken was fried in, on low heat. Add the bay leaf, onion and cashew nuts. Fry until onion is translucent
Add the ginger/garlic paste and fry for a minute
Add the spices, kashmiri chilli powder, ground fennel and garam masala. Fry for a minute
Add the passata and add the dried methi leaves, crush between your fingers
Allow to cook for 15-20 minutes until the sauce reduces. Remove the bay leaves and blend into a smooth paste
Return to the pot and add the fresh cream. Heat through
Add the chicken and turn up the heat. Bring to a boil and turn off the heat
Allow the chicken to cool completely
Thaw out the phyllo pastry. Preheat oven to 180 degrees Celsius
Cut the each phyllo sheet into 4 squares. Brush them with olive oil or melted butter. Using a large muffin pan place 4 sheets into each muffin holder.
Fill with the cooled butter chicken and bring the ends together forming a parcel. Bake for 20-30 minutes until crisp and golden brown on the edges
Serve warm with some rocket leaves