Cook the pasta in boiling salted water for about 8 minutes. Drain the tuna. Peel and chop onion and garlic
Fry the onion and garlic in hot oil. Sweat tomato paste with. Add tomatoes, chop a little and bring to the boil. Simmer for about 10 minutes. Stir in cream, season to taste
Drain the pasta. Place the tuna, peas and tomato sauce in a large greased casserole dish. Grate cheese over it. Bake in a preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for 25-30 minutes. Garnish with parsley