Chicken Reshmi butter masala

Sharing a popular Bengali marriage special recipe:
Got this recipe from a TV show of Rongon Neogi, Catering Technologist & popular Food Columnist cum Food Stylist / Food Designer...He didnt mentioned the quantity of the ingredients...I adjusted the quantity according to my taste :)

Ingredients:
Chicken(boneless):1 kg,cut into 2 inches cubes
Butter(Melted):1/2 cup
Refined oil:3-4 tbsp
Salt to taste
Sugar:1 tbsp
Refined flour:1 tbsp
Kashmiri mirchi powder:2 tsp
Cream:4-5 tbsp
Tomato puree:1,large 
Garam masala powder:1/2 tsp
Black pepper powder:1 tsp
Onion paste:2 tbsp
Ginger paste:1.5 tbsp
Garlic paste:1 tbsp
Cashew paste:2-3 tbsp
Meetha attar:Few drops
Egg:1
Hot water:1 cup

Method:
Step 1:
Marinate the chicken with:
2 tbsp of Cream,few pinches of salt,1/2 tbsp of sugar,1 tbsp of onion,1 tbsp of ginger-garlic paste,1/4 tsp of garam masala 

powder,fewdrops of misti attr,chicken,refined flourand a beaten egg.

Keep it for at least half an hour.

Preheat the microwave oven at 180 degree.

Brush the chicken pieces with the melted butter.

Roast the marinated chicken pieces by turning the sides till they are done.

Step 2:
Heat oil and remaining butter.

Add cashew paste,ginger paste,tomato puree,kashmiri mirch powder and black pepper powder.

Cook till the rawness is gone and oil seperates from the sides.

Add the hot waterand cook till the gravy starts boiling.

Add the chicken pieces.

Cook for another 4-5 minutes.

Add the remaining cream,stir it well.

Remove from the flame.

Add the remaining garam masala powder.

Serve it hot with paratha or naan.