Lightly mist a pan with Frylight or a comparable product, then heat it to a medium temperature.
Incorporate the carrot, onion, garlic, red and green peppers. Add mushrooms and cook for a few minutes.
Once added, cook the mince until browned.
Add the stock and simmer, covered, for five minutes.
Add the Worcestershire sauce, chopped tomatoes, passata, tomato puree, and mixed herbs. Add pepper and salt for seasoning.
Simmer, uncovered, stirring frequently, for 15 to 20 minutes. Simmer any extra liquid until it evaporates. [In the interim, prepare the cheese sauce.]
Warm up the oven to 200°C (180°F fan) and Gas 6.