And here's what I did.
2 cups rolled oat
1 cup basmati rice (long grain)
2-1/4 cups water
1 pkt white beech mushroom / porcini mushroom
1 TB sesame oil
1 TB fried onion oil
2 TB light soy sauce
a dash of ground pepper
(1) put together rolled oat, rice & water into rice cooker and then on the switch, leave to cook.
(2) on the other hand, marinade mushroom with soy sauce, pepper and sesame oil.
(3) once the rice oat is ready, stir in mushroom & mix well then off the rice cooker & set aside.