Vegetarian Cassoulet Recipe

Name: Vegetarian Cassoulet Recipe
Ingredients: 225g - 8oz dried haricot beans, soaked overnight; 2 medium onions; 1 bay leaf; 1.4 litres - 2 1/2pints cold water; 550g - 1 1/4 lb large potatoes, peeled and cut into 1cm - 1/2inch slices; Salt and freshly ground pepper; 5 tsp olive oil; 1 large garlic clove, peeled and crushed; 2 leeks, trimmed and sliced; 200g can chopped tomatoes; 1 tsp dark muscovado sugar; 1 tbsp freshly chopped thyme; 2 tbsp freshly chopped parsley; 3 courgettes(zucchini), trimmed and sliced; *for the topping:; 50g - 2oz fresh white breadcrumbs; 25g - 1oz cheddar cheese, finely grated