Heat butter and oil in an inner pot of instant pot on sauté mode.
Once butter oil is hot, add garlic and green chili paste, sauté for a few seconds.
Now add tomatillos, green bell pepper, onion, and green onions. Saute for a minute.
Now add potato, cauliflower, zucchini, green peas, 1 ½ cups of water, salt, and pav bhaji masala.
Mix everything well.
Now cover the instant pot with its locking lid, turn off the sauté button, press the manual/pressure button, and set the time for 12 minutes under high pressure.
Once cooking time is done, let the pressure release naturally.
Open the instant pot, turn on the sauté button, and mash everything with the potato masher well. Add a little bit of water if required. Let the bhaji cook for 5 minutes in sauté mode.
Now add spinach-cilantro puree, mix and cook it for a minute on sauté mode.
Turn off the instant pot. It’s ready.