Preheat oven to 200°C. Heat oil in a large flameproof casserole pan over high heat. Add sausages and cook, turning occasionally, for 3-5 minutes or until browned. Remove from pan and set aside. Reduce heat to medium. Add onion, garlic and pancetta and cook, stirring, for 5 minutes or until onion is soft. Add cannellini beans, tomatoes, stock, thyme and bay leaves and bring to the boil. Cover pan with a lid, transfer to oven and bake for 10 minutes.
