Try this homemade Leftover Roast Beef Casserole recipe the whole family will love. Made with leftover roast beef, cream of broccoli soup, rice and milk.…
This Leftover Roast Beef Casserole relies on simple, everyday ingredients such as leftover roast beef, cubed, au jus sauce, cooked rice and milk. It comes together quickly and makes 4 servings, at about 648 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