Heat oven to 200C/fan 180C/gas 6 and heat 1 tsp oil in a large frying pan.
Add the onion and carrot and soften for 10 mins. Scrape into a large bowl, then add the breadcrumbs, 5 tbsp of the passata, the Worcestershire sauce, egg, mince, half the thyme and some seasoning. Mix well.
Brush 4 large ramekins or 6 muffin tins with the remaining oil.
Press the mince mixture into them, then pour the remaining passata over the top. Top each with a tomato half, sprinkled with a pinch of sugar, salt and pepper and the remaining thyme.
Bake for 50 mins until cooked through, then serve with Chive mash (recipe below).
