Preheat oven to 160° C.Slit and roast bhavnagri chillies on open flame till charred. Soak in a bowl of water and peel.Discard heads and remove seeds. Roughly chop them and place in blender jar with garlic. Crush and transfer in bowl.
Take butter in another bowl. Add refined flour, salt and crushed peppercorns and mix well.Add crushed chilli-garlic and cheese and mix. Knead into dough and refrigerate for 10-15 minutes.
Place silicon sheet on a baking tray. Divide dough into equal portions, shape into small balls and flatten them. Place them on the silicon sheet and place the baking tray in the preheated oven. Bake for 15 minutes. Remove from oven and cool on a wire rack. Serve.