Simmer the soaked beans in water for approx. 1 hr. until soft, drain. Heat the olive oil in a large pan, sauté the onion and garlic for approx. 5 mins. Add the tomato puree, oregano, cinnamon and chilli powder, cook briefly. Add the tomatoes and water, bring to the boil, season and simmer for several minutes. Add the beans, transfer all of the ingredients to the dish.
Approx. 1 hr. in the centre of an oven preheated to 180°C. Garnish with parsley before serving.