Clean mushroom, slice and keep aside.
Heat oil, add cumin; allow it to crackle then add red chillies and fry for a minute.
Add onions, ginger garlic paste and saute till onions turn slightly brown.
Next add the capsicum, saute well retaining its crunchiness.
Then add the tomato puree and fry for 3-4 mins till raw smell leaves.
Then add the turmeric powder, red chilli powder, coriander powder, garam masala powder and required salt - mix well and fry for few mins.
Add a little water if it`s very thick.
Add the mushroom and mix gently until well combined.
Simmer for 3 mins and keep covered so that the mushroom gets cooked, becomes soft and nicely blended with the gravy.
Once the mushroom gets soft, simmer for 2 mins then coriander leaves and switch off.