Try this homemade Mary'S Potato Casserole recipe the whole family will love. Made with hash browns, onion, margarine and cream of chicken soup. Easy ste…
This Mary'S Potato Casserole relies on simple, everyday ingredients such as hash browns, small onion, chopped, margarine and sour cream. It comes together quickly and makes 4 servings, at about 369 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It works as a light main on its own or as a starter alongside crusty bread, and it's just as good for a cozy night in as it is for feeding a crowd. Leftovers keep well, so it's a smart choice for meal prep too.
Updated Jun 30, 2026