How to Make It

Preheat the oven to 180 degrees celsius. Bring a large saucepan of water to the boil and cook the rigatoni for the time instructed on the packet.

Whilst the rigatoni is cooking, melt the butter in a saucepan and stir in the flour. After cooking for 1 minute, gradually stir in the milk to make a sauce.

Remove from the heat and stir in most of the cheese.

Drain the pasta and mix with the white sauce, tuna and sweetcorn. Transfer to a baking dish and top with the rest of the cheese.

Bake for 15 minutes until golden, then serve.