Warm the water and sprinkle the sugar and yeast in this. Set aside for 5 mins. In a bowl put flour baking powder and salt.
Add the yeast mixture to this and knead well and add the oil in between kneading the dough. Knead the dough well till soft and keep this aside for 2 hrs till it rises to double.
Making White Sauce:
Heat the butter in a pan and mix the flour and saute well. Now add milk and mix well. Add salt, oregano, parsley, basil and thyme and mix well. Boil till the sauce becomes thick and creamy. Off the flame and the sauce is ready.
Making the Filling:
In a pan put oil and put the sausage or chicken and saute well. Add salt and pepper powder to this and mix well. Cook the sausage well and off the flame.
Assembling and Baking:
Once the dough is doubled well punch down the air. Sprinkle some flour on working space and roll the dough into a large rectangle. Now spread ketchup. Now put the cooked sausage or chicken. Then put the diced veggies ,olives and corn.
Spread the prepared white sauce and mozzarella cheese. Now roll this into a log. Now form this to a circle. Now beat the egg slightly and give a egg wash on the Stromboli.
Sprinkle sesame seeds over this. Now give small cuts on the Stromboli. Grease a round baking tray and keep the Stromboli on the tray.
Preheat the oven at 200 degree C for 10 mins. Bake the Stromboli at 180 degree c for 15 to 20 mins or till its cooked. Cut into pieces and serve.