Make sauce: use a small jug to combine and whisk the oyster sauce, soy sauce, dark soy sauce, mirin, brown sugar, rice wine vinegar and cream. Set aside.
Cook mushrooms: at 2 tbs peanut oil in fry pan at high heat, add mince garlic, sliced mushrooms and quartered swiss brown mushrooms. Cook for 3 till 4 minutes, till mushrooms have softened. Then remove from pan and set aside.
Cook vegetables: use the same pan to stir fry the cabbage, carrot and green onions for 2 to 3 mins.
Cook noodles: according to the packet instructions, drain, discard noodle water then add the noodles to the cooked vegetables.
Add mushrooms: and noodles: add cooked mushrooms, followed by the cooked noodles to the pan.
Pour over sauce: pour the sauce over the noodles and stir till the sauce is consistently combined and the dish is heated through.
Serve: portion into bowls, garnish with chopped green onions (optional) and serve with chopsticks.