Try this homemade No-Peek Casserole recipe the whole family will love. Made with round steak, mushroom soup, mushrooms and onion soup. Easy step-by-step…
This No-Peek Casserole relies on simple, everyday ingredients such as round steak, cut into cubes, mushroom soup, large can mushrooms, drained and dry onion soup mix. It comes together quickly and makes 4 servings, at about 991 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