Rinse and dry the mushrooms well. Trim the stalks carefully .Add all spices along with gramflour and oil and mix well. Marinate mushrooms in it for atleast half an hour. Preheat oven to 200c.
Set mushrooms on skewers. Keep little distance between pieces .Bake for 25-30 mins.Keep adding oil in between . Turn the skewers after 15 mins. Sprinkle some chaat masala and lime juice once ready . Serve hot with mint chutney.