First soak the cashew nuts in warm water. Let it soak for 10-15 minutes.
Meantime make onion-tomato paste. Heat 2 teaspoons of oil in a pan.
Once hot add chopped onions, ginger and garlic. Sprinkle some salt and cook till onions get soft and translucent.
Mix in chopped tomatoes. Cook till they get slightly soft.
Turn off the stove and let it cool down a bit.
Make smooth paste out of this mixture using blender or grinder. Remove it to a bowl and keep it aside.
Also make the smooth paste of soaked cashews. Keep it aside.
Making matar mushroom recipe:
In the same pan heat 2 teaspoons of oil. Once hot add chopped mushrooms.
Saute till they become golden brown. First it starts to release its water. Then all the water will dry up. and mushroom will starts to brown.
Remove it to a plate and keep it aside.
While mushrooms are cooking, boil the peas. You can boil in pressure cooker. Or microwave it.
Now in the same pan heat remaining 2 teaspoons of oil.
Once hot add cumin seeds. Let them sizzle a bit.
Then add chopped green chilies. Saute for 30 seconds.
Then mix in prepared onion-tomato paste. add little salt.
Cook till all the moisture evaporates and oil starts to ooze out from the sides. Do stir in between to make sure it is not sticking to the bottom of the pan.
Then add turmeric powder, red chili powder, coriander powder, garam masala and crushed kasoori methi. Mix well and cook for a minute.
Then add 1 cup or more or less water. Bring to a simmer.