In Italy, tuna is often added to tomato-based puttanesca pasta sauce, sometimes enhanced with chili flakes, capers, or olives. Turn it into a casserole using shapes like penne, rigatoni ...

Stir in the tuna and salt. Toss the pasta with the sauce, loosening with a little pasta water if necessary. Serve the tuna pasta sprinkled with the remaining parsley and freshly ground pepper.

Flake the tuna on top of the pasta and broccoli. Pour the cheese sauce over the pasta mixture, then top with the sliced tomatoes, if using. Sprinkle over the remaining cheese. Place the pasta bake ...