Try this homemade Tuna Fish and Spaghetti Casserole recipe the whole family will love. Made with solid white tuna, cream of mushroom soup, milk and onio…
This Tuna Fish and Spaghetti Casserole relies on simple, everyday ingredients such as milk (1 soup can), onion, chopped fine, green peppers, chopped fine and potato chips, crushed. It comes together quickly and makes 4 servings, at about 184 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