Try this homemade Potato Tuna Au Gratin recipe the whole family will love. Made with gratin potatoes, light tuna, onion and broccoli cuts. Easy step-by-…
This Potato Tuna Au Gratin relies on simple, everyday ingredients such as chopped onion, shredded cheddar cheese and breadcrumbs. It comes together quickly and makes 4 servings, at about 170 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