Cook the pasta in salted boiling water for 2 minutes less than the pack timings, then drain.
Meanwhile, heat the oil in a pan and soften the onion for 8 minutes. Add the garlic for 1 minute, then the tomatoes, purée and oregano. Simmer for 10 minutes and season.
Stir the pasta, tuna and sweetcorn into the sauce and tip into a 2-litre ovenproof dish.
Scatter over the cheese and bake for 15–20 minutes until golden and bubbling and piping hot in the centre.
Allergens
Wheat (gluten), fish, milk.
FAQs
Can I make it ahead?
Assemble, cool and chill for up to 24 hours. Bake for 25–30 minutes until piping hot all the way through.
Can I freeze it?
Yes, for up to 3 months. Defrost in the fridge overnight before baking.
How much tuna is safe in pregnancy?
Current NHS advice is that pregnant women can eat up to four medium-sized tins of tuna a week.
Can I swap the tuna?
Cooked chicken or a tin of drained beans both work.
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Recipes on CookStuff are researched and editor-written. Check food is piping hot when you reheat it, and follow the storage advice on packs.