Heat oil in frying pan, add onion and stirring for 5 mins.

Stir in garlic, red pepper, paprika, and dried chillies and cook for 2 mins. Mix in the tomatoes, stock and a little salt and pepper. Bring to the boil, then pour into slow cooker pot. Break the tuna into large pieces and stir into the tomato mixture. Cover with lod and cook on low for 4-5 hours.

When almost ready to serve, cook the spaghetti, drain and add to the pot. Serve with cheese.