Rinse bell peppers, cut in half, remove seeds and ribs and cut into strips. Rinse beans and peel. Drain baby corn and cut in half lengthwise.
Heat sesame oil in a wok (or large frying pan) and fry beans and bell peppers for about 6-8 minutes while stirring. Finally add corn and sprouts and let heat. Season with oyster sauce and soy sauce and sprinkle with sesame seeds. Serve with rice.