Heat the oil in a medium pan and fry the onion for 5 mins until softened and lightly golden. Stir in the garlic and cook for a further min. Mix in the tomatoes and sugar, bring to the boil and simmer for 20 mins. Add a few dashes of Worcestershire sauce and season to taste. This basic sauce can now be chilled or frozen.

Meanwhile, cook the pasta according to pack instructions. Heat the grill to high. Mix together the cheese and breadcrumbs.

Drain the pasta and stir into the sauce. Tip in the frankfurters (if using) and spoon into a heatproof dish. Scatter over the cheesy crumbs and grill for 3-5 mins or until bubbling hot and golden. Serve with a simple salad.