Heat the oil in a large frying pan or wok, and add the leek and garlic. Cook over a medium heat for about 3 minutes, until fragrant.

Add the cannellini beans, cooked puy lentils, and smoked paprika, and continue to cook for a further 5 minutes, stirring regularly. If the mixture seems to be drying out too much, just add a dash of water.

When everything is hot, season to taste, and serve drizzled with extra virgin olive oil, and with fresh parsley if desired.