Firstly, press SAUTE on Instant Pot. Next, add olive oil, and once it’s hot, add minced garlic, onions, green, and saute till onions soften.
Next, add diced mushrooms and celery and saute till all the liquid released from the mushrooms has evaporated. This will take about 6-8 minutes, and this step helps concentrate the mushroom flavor.
Then add vegetable broth (or water), seasonings like Italian seasoning, red chili flakes, salt, and black pepper powder. Mix well. Deglaze the pot, i.e., make sure there is no food particle sticking to the pot to avoid BURN alerts. Close the Instant Pot with pressure valve to Sealing. Cook on High Pressure for 5 minutes.
When the instant pot beeps, let the pressure release naturally. Open the lid.
Puree soup using a hand blender until smooth. If you don’t have a hand blender, puree in a blender in batches once slightly cooled.
Add coconut cream or heavy cream, stir well. If you think the soup is too thick, you can add water or coconut milk and simmer for 2 minutes.
Cream of Mushroom soup recipe is ready. While serving, sprinkle cilantro and some sautéed mushrooms if desired and serve hot!