Add cream and simmer until flavors meld, about 2 minutes. Use a slotted spoon to remove potatoes from oil. (Save oil for another use.) Spoon sauce over steaks and serve with warm potatoes.

As a matter of fact, whether you're preparing filet mignon ... sauce, combine steak drippings with wine or stock over medium ...

You won't have to do much (and shouldn't) to a filet mignon to get an almost buttery piece of meat. It's lean without a ton of beefy flavor, so it's often served with sauce or wrapped in bacon to ...