Struggle to get your five-a-day? This superhealthy lentil ragu will get you four steps closer and can be frozen for extra convenience
3 tbsp olive oil
2 onions, finely chopped
3 carrots, finely chopped
3 celery sticks, finely chopped
3 garlic cloves, crushed
500g bag dried red lentils
2 x 400g cans chopped tomatoes
2 tbsp tomato purée
2 tsp each dried oregano and thyme
3 bay leaves
1l vegetable stock
500g spaghetti
parmesan or vegetarian cheese, grated, to serve