HEAT half the oil in a wok and stir fry the onion and garlic until softened. Remove from the wok and set aside.
STIR-FRY the lamb strips in the remaining oil for 3-5 minutes or until well browned. Stir in the chilli sauce, Vegemite*, onions and garlic and heat thoroughly, toss through the noodles and spoon evenly into the lettuce cups. Sprinkle with the coriander and serve immediately.