Try this homemade Penne and Blue Cheese Mushroom Casserole recipe the whole family will love. Made with butter, onion, fresh garlic and red bell peppers…
This Penne and Blue Cheese Mushroom Casserole relies on simple, everyday ingredients such as butter (can use more butter), onion, chopped, fresh garlic, chopped and celery ribs, chopped. It comes together quickly and makes 4 servings, at about 1893 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