In a bowl add refined flour, milk powder, salt,sugar,curd ,baking soda and kneed a dough with warm water for 15 to 20 min
For better mixing you can use blender
Apply oil in a dough and cover with moist cloth and keep aside for 3 hr.
Again mix a dough properly and make a small balls and apply oil over all ball and cover it again with a cloth for 15 min
In a bowl add kalonji and coriander leaves
Apply dry flour in ball and make shape of naan and sprinkle kalonji and coriander leaves over it.
Apply water in a back of naan
Heat tava and place back of naan in it and cook for a couple of seconds
Now flip the tawa into flame and cook upper side of naan .
Serve in platter and apply butter on naan