In a small bowl whisk together sauce ingredients. Set aside.
Bring a pot of water to a boil. Submerge noodles for 2 to 3 minutes to loosen, gently stirring to help them break apart. Drain into a colander, gently rinse with cool water and set aside.
Place a wok or large pan over medium-high heat and add oil. Add onion and carrot and sauté for 2 to 3 minutes.
Add garlic, mushroom and bok choy and continue to sauté for 3 to 4 minutes or until vegetables wilt have started to brown around the edges.
Add sauce and noodles to skillet and toss together until everything is fully and evenly coated in sauce.
Cook for 2 to 3 minutes, tossing/stirring frequently until noodles have just cooked through.
Remove from heat and top with green onions. Serve.
