Pork sausage cassoulet

Name: Pork sausage cassoulet
Ingredients: 2 teaspoon olive oil; 8 thick pork sausages (960g); 1 brown onion (200g), chopped finely; 155 gram piece pancetta, chopped finely; 1 carrot (120g), chopped coarsely; 1 stalk celery (150g), trimmed, chopped coarsely; 2 clove garlic, crushed; 2 tablespoon tomato paste; 1 1/2 cup (375ml) chicken stock; 410 gram canned crushed tomatoes; 1 teaspoon fennel seeds; 400 gram canned white beans, drained, rinsed; 2 thick slices (100g) sourdough bread; 1 tablespoon coarsely chopped fresh flat-leaf parsley