Take a wok,add oil to it,now add cumin seeds,let it splutter,add gingergarlic paste,saute till brown,add pureed tomatoes,add salt,red chilly powder,turmeric powder,coriander powder and cook till mixture leaves oil.
Now add all the veggies,strain mushrooms out if milky water and add them also.
Cover it and let it simmer for 15-20 minutes.
Uncover it and check if vegetables have softened,cook it for 5 more minutes.
Garnish it with garam masala and coriander leaves.