Heat oil in a pan on medium heat, add cumin seeds and let them crackle. Now add onions, and saute till golden brown.
Add green chilies, ginger-garlic paste, and turmeric powder, and saute.
Add the tomato puree and the salt. Saute and cook them for a minute.
Now add roasted besan (gram flour), red chili powder, and coriander powder, and saute. Reduce the puree till the oil separates.
Add the green peas, and cook them for 5-7 minutes. Pour some water to main the consistency, cover, and cook for 5-6 minutes. Add 150 ml of water, and bring it to a boil.
Add the mushrooms and cook them for 5-6 minutes. Now cover the pan and cook for 5-6 minutes again for the mushrooms to get soft. Regularly check and saute them to not let them burn.
Add garam masala, dried fenugreek leaves and mix well.
Finally, garnish it with cashew nut paste, and give it a mix.
Your mushroom matar recipe is ready to serve.