Heat the oil in a frying pan, add the onion and garlic, and cook until softened. Add the spices, mix well, and cook for a further 2 minutes. Add the mushrooms and cook over a low heat until they are soft but dry.
Place the beans in a bowl and mash lightly with a fork; add to the mushrooms along with the coriander, crushed tortilla chips, breadcrumbs and chilli