Preheat the grill to its highest setting.
Heat the oil in a frying pan and add the chilli and garlic and fry for one minute.
Add the brown sugar and cook for two minutes, or until the sugar starts to melt.
Add the soy sauce, tomato sauce and cannellini beans. Bring to the boil, then reduce the heat and simmer for four minutes.
Place the tortilla into a clean ovenproof frying pan. Pour the beans mixture into the middle and fold the tortilla to cover.
Top with the grated cheese and place under the grill. Cook for two minutes, or until the cheese is melted and golden.