Place the lid on and seal the appliance. Pressure cook for 30 minutes. Let the Instant Pot naturally release pressure. After 10 minutes of venting, release the rest of the pressure. Serve immediately or thicken the gravy by removing the steaks and mixing in a slurry of 1 tablespoon of cornstarch and 1 tablespoon of cold water, then stirring while using the Saute setting to heat the gravy until it’s thick.