Try this homemade Tuna Green Bean Casserole recipe the whole family will love. Made with green beans, water, mushrooms and onion flakes. Easy step-by-st…
This Tuna Green Bean Casserole relies on simple, everyday ingredients such as sm. can water packed tuna, onion flakes and cheese slices. It comes together quickly and makes 4 servings, at about 363 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