In a bowl add cleaned button mushrooms, turmeric powder, red chilli powder, garam masala powder, ginger garlic paste, salt, thick curd, gram flour/besan and oil. Mix everything well together without adding any water and set it aside for 20 to 30 mins at the least.
Meanwhile preheat the oven at 200°C for 10-15 mins.
Arrange the mushrooms on a skewer, preferable 5 pieces per skewer. Either set the skewers arranged on the automatic rotisserie or place them on a baking dish (lined with aluminum foil) and rotate them every few mins so that are evenly grilled and roasted at 200°C. After 15-20 mins, as mushrooms look shrunken, turn golden and charred at places, remove them from the oven.