Break lo mein noodles into thirds. Cook as directed on package. Rinse with cold water; drain.
Cook edamame as directed on bag; drain.
In medium bowl, place bell pepper, onions, noodles and edamame.
In small bowl, beat dressing ingredients with wire whisk until well blended. Spoon over noodle mixture; toss to coat. Serve immediately, or cover and refrigerate until serving time.