1. Heat half the oil and cook the onion, garlic, coriander and cumin for 3 - 4 minutes stirring occasionally.
2. Add mushrooms and cook for a further 2 minutes.
3. Place half the cannellini beans in a processor and pulse to a coarse paste.
4. Add the mushroom mix and the remaining beans to the paste along with the parsley; mix well.
5. Shape into 4 burgers with floured hands.
6. Heat the rest of the oil and fry the burgers for 2 minutes each side.
7. Serve with burger buns and ketchup.
8. ++++++To Freeze++++++.
9. Wrap the uncooked burgers in cling film and foil and freeze for up to 3 months. Defrost completely before cooking.