Try this homemade Tuna Spinach Au Gratin recipe the whole family will love. Made with black pepper, lemon juice, parmesan and salt. Easy step-by-step in…
This Tuna Spinach Au Gratin relies on simple, everyday ingredients such as tuna drained and flaked, spinach cooked and drained, black pepper and lemon juice. It comes together quickly and makes 4 servings, at about 319 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