Step 1

Drain the beans and bring to the boil in a pan of salted water. Cook for 10 mins, drain, rinse and put in a slow cooker with the onions, carrots and celery.

Step 2

Stir in the olive oil, garlic, stock, tomatoes, half a can of water and the miso. Tie the herbs together with kitchen string and add these as well. Season. Cover and cook on low for 6-8 hrs, until the beans are cooked through and all of the veg is really tender.

Step 3

Remove and discard the herbs and stir in the pasta. Cover and cook on high for another 30 mins. Add the cavolo nero stalks and leaves and cook for a final 30-40 mins, or until the pasta is cooked through and the greens are tender. Serve scattered with the cheese and drizzled with a little more olive oil, if you like.