Bake this irresistible Mushroom Pie Casserole at home. Made with onion soup, beef broth, rice and mushrooms. Easy step-by-step instructions included.
This Mushroom Pie Casserole relies on simple, everyday ingredients such as onion soup (no water), beef broth (no water), uncooked rice and mushrooms, drained. It comes together quickly and makes 4 servings, at about 284 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Mushroom Pie Casserole delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.
Updated Jun 30, 2026