Step 1

Cook the noodles according to package directions in plenty of rapidly simmering water until al dente, then drain.

Step 2

Meanwhile, heat the safflower oil, broth, or water and 1 teaspoon of the sesame oil (if desired) in a stir-fry pan. Add the cabbage, broccoli, and green beans. Cover and cook for 2 to 3 minutes.

Step 3

Add the mushrooms, if desired, and scallions and stir-fry over medium-high heat for 5 minutes or until the vegetables are just tender-crisp. Add a small amount of vegetable broth or water, just enough to keep the pan moist.

Step 4

Add the cooked noodles to the stir-fry pan and toss together. Add the remaining teaspoon of sesame oil, if using, then season with soy sauce and pepper to taste. Serve at once.