1 courgette, diced
100²µ/3½´Ç³ú leek (about 1 large leek), finely chopped
400g tin chopped tomatoes
6–8 gluten-free lasagne sheets
pinch each of salt and ground black pepper
1 tbsp mixed dried herbs
1 tbsp garlic-infused oil
2 tbsp tomato purée
150–200ml/5–7fl oz gluten-free beef or vegetable stock
3 tbsp mascarpone or cream cheese
2 large handfuls grated mozzarella or cheddar (or a mix of both)
500g/1lb 2oz beef mince