In a small bowl add the salt, yeast and warm water and mix well. Keep covered for 5-10 mins till yeast is proofed. In a larger mixing bowl, add the flour and then the proofed yeast mixture. Mix well (dough will be a little sticky), cover with a lid and set aside for 2 hours till dough has doubled in size.
After about 20 minutes, keep the heavy bottom container, along with the insert and lid on the stove and turn the stove on so that they get heated for baking. After 30 mins the dough would have risen some more. Now brush the top with the melted butter and sprinkle some of the masala powder on top of the butter.
Gently and carefully lower the baking dish into the heated container on the stove and cover with the heated lid. Cook on low heat for 45 mins or till the bread is done and well browned. Remove carefully and gently remove bread from the baking dish and allow to cool in a rack before slicing.