Cook the pasta in salted boiling water for about 6-8 minutes until almost al dente.

Meanwhile, cut the tomato and red onion into small pieces and mix them with the sweetcorn in a large bowl.

Drain the tuna and add it to the bowl along with the Greek yogurt and seasoning.

Drain the pasta and combine it with all the other ingredients.

Pour everything into a baking dish (or multiple dishes if you want to meal prep), and sprinkle the grated cheese on top.

Bake for 12 minutes at 200°C (392°F), or until the cheese is golden brown. Enjoy!