Try this homemade Southwest Tuna Casserole recipe the whole family will love. Made with canola oil, onion, celery and corn kernels. Easy step-by-step in…
This Southwest Tuna Casserole relies on simple, everyday ingredients such as canola oil, medium onion, chopped, celery, chopped and corn kernels. It comes together quickly and makes 4 servings, at about 1353 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