Try this homemade Mary Holland'S Vegetable Casserole recipe the whole family will love. Made with frozen cauliflower, frozen broccoli, corn and Swiss ch…
This Mary Holland'S Vegetable Casserole relies on simple, everyday ingredients such as corn, drained, grated swiss cheese, cream of celery soup and sliced mushrooms. It comes together quickly and makes 4 servings, at about 378 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