Try this homemade Portabella Mushrooms With Rarebit Filling recipe the whole family will love. Made with portabella mushrooms, olive oil, cheddar cheese…
This Portabella Mushrooms With Rarebit Filling relies on simple, everyday ingredients such as large portabella mushrooms, olive oil, cheddar cheese, grated and english mustard. It comes together quickly and makes 4 servings, at about 293 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026