Cook the noodles according to package directions. Drain and set aside.
Heat oil in a large skillet over medium-high heat. Add cabbage and carrots and cook for 3 to 4 minutes until slightly softened but still crisp.
Stir in green onions, garlic, and ginger, and cook for 30 seconds until fragrant.
In a small bowl, whisk together the tamari, rice vinegar, maple syrup, water, and cornstarch or arrowroot powder.
Add the cooked noodles to the skillet, then pour in the sauce.
Toss everything together and cook for 2 to 3 minutes until the sauce thickens and coats the noodles. Garnish with sesame seeds and cilantro if desired. Serve hot.