1. Finely chop the onion.
2. Heat the oil over a medium heat, and add the onion, stirring well and cooking for 5 minutes.
3. Skin the sausages and add to the onion, stirring well to break them up and cooking for a further 5 minutes.
4. While the sausages are cooking, remove the stalks from the kale and shred.
5. Add the red wine to the pan, stirring well to deglaze the caramalised bits from the bottom.
6. Crush or grate the garlic into the pan and add the kale, stirring well and cooking for a few minutes.
7. Add the tomatoes and the butter beans, stirring well and cooking for a further five minutes.
8. Stir in the cream, and season to taste.
9. Serve.