"This is a quick casserole version of hamburger steak with onions, brown gravy, and potatoes. It is great comfort ... submitted by real home cooks. The best are featured on justapinch.com as ...
For the casserole: Preheat the oven ... In a small bowl, stir together the sour cream and onion soup mix. Refrigerate while you prepare the potatoes so the flavors have time to meld.