Filling and warming - this supper is the perfect mid-week dish!
Preheat the oven to 200°C/180°C fan/gas mark 6. Heat the reserved oil in a large sauce pan and gently fry the onion and garlic with a pinch of chilli flakes until softened. Add the tomatoes and purree, seasoning with salt and pepper to taste. Simmer gently for around 15 mins until the sauce has thickened (add a little extra water if needed).
At the same time, cook the pasta following the pack instructions, adding the broccoli for the final 3 mins of the pasta cook time. Drain and reserve some of the cooking water.
Combine the tomato sauce, pasta, tuna and broccoli; adding some cooking water if the fixture is a little thick.
Tip into an ovenproof dish, sprinkling over the grated cheese.
Place in the oven and bake for around 20 minutes until the cheese is golden and bubbling. Serve!