1.Combine potatoes, mushrooms, sausage, salt, pepper, onion and chicken stock in the inner pot of the Instant Pot.
2.Close Instant Pot lid and set valve to sealing. Set Instant Pot to a manual high-pressure time of 10 minutes, allowing for a quick release when the cooking time has completed. 3.Remove lid and add in heavy cream and cheddar cheese, stirring to combine. Turn pressure cooker onto saute mode and stir until heated. 4.Turn off the Instant Pot and serve. Serves 8