Try this homemade Tuna Casserole recipe the whole family will love. Made with tuna, onion, bell pepper and cream of mushroom soup +. Easy step-by-step i…
This Tuna Casserole relies on simple, everyday ingredients such as tuna drained, small onion chopped, small bell pepper chopped and salt and pepper to taste. It comes together quickly and makes 4 servings, at about 306 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