Take 4 tbsp of Luke warm water in small bowl, add sugar and yeast in it mix well rest it for 10 min till yeast is rising .
. In big bowl take plain flour ( maida ) , add salt, egg milk and yeast mixture mix well add little by little water mix well till soft dough is ready. knead dough with some oil, keep it in big bowl, keep bowl in warm place for 2 hrs.
For Stuffing heat butter and oil together in pan. Add onion in it when onion is lightly brown add gg paste in it mix well cook for 2 min. Now add chicken pieces mix well cook till water is reduced from it.
Now add the red chilly powder, salt , chaat masala, tandoori chicken masala mix well . Then add soy sauce and tomato ketchup mix well cook for 2 min on medium heat then switch off the flame.
Heat the coal on gas when its heating keep it in small plate , keep plate on Stuffing pan add some butter on coal when smoking is coming out close pan with lid for 15 min .
After 15 min remove coal plate from Stuffing pan, then grind it coarsely.
Take out grinded Stuffing in bowl add grated cheese in it mix well.
Now take out the dough puch down it with the help if your palm divide the dough equal size in balls.
Beat the egg in plate keep aside. Flatten the ball fill 1 tbsp of Stuffing , re- shape it make smooth ball. Grease balls with egg sprinkle onion seeds ( kalonji ) .
Rest the balls for 10 min before baking. After 10 min bake it on 200 c of preheated oven for 25 min.
Serve delicious buns with tomato ketchup and hot tea .