Try this homemade Asparagus Onion Casserole recipe the whole family will love. Made with Onion, Butter, Flour and milk. Easy step-by-step instructions i…
This Asparagus Onion Casserole relies on simple, everyday ingredients such as asparagus, fresh, med onion, sliced, butter and flour, all-purpose. It comes together quickly and makes 4 servings, at about 428 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