Preheat oven to 180°C. Heat butter in a non stick pan. Finely chop green chilli.
Add onions to the pan and saute till transluscent. Add mushrooms and mix. Add salt and mix and saute for 1-2 minutes.
Add green chilli. Roughly chop fresh dill and add some of it. Transfer into two earthenware shallow bowls. Sprinkle garlic, remaining dill and keep them in the preheated oven. Cook for 20-25 minutes. Serve in the same bowls.