This is a hearty, healthy lentil soup full of flavour and goodness. Serve it piping hot with some crusty bread.
1. Heat the oil in a deep frying pan, add the onion and carrots, and fry over a high heat, stirring, for 10 minutes or until lightly brown.
2. Add the garlic, lentils, and barley and fry for 1 minute. Blend in the passata and stock and season with salt and freshly ground black pepper.
3. Bring to the boil, cover with a lid, and simmer for 40–45 minutes (50–55 minutes for 12) or until the lentils and barley are tender.
4. Add the sugar and vinegar, check the seasoning, and serve.
In the Aga
At step 3, cover with a lid and transfer to the simmering oven for 45–55 minutes.
Mary Berry's lentil soup can be made up to three days ahead, but it is not suitable for freezing.
The new edition of Mary Berry Cooks up a Feast by Mary Berry and Lucy Young is published by DK (3 October 2019, £25) DK.com
See more fabulous recipes from Mary Berry
Visit our soup recipe section for a wide range of healthy winter warmers, including a creamy red lentil soup with cumin and Mary Berry's leek and potato soup recipe