Combine the cucumber, scallions, and red bell pepper in a medium bowl and refrigerate.
In a medium non-stick saute pan, lightly cook carrots and mushrooms in a medium pan with the sesame seeds, adding 1 tablespoon of water at a time. Continue to cook until carrots and mushrooms are tender. Cool. Add to cucumber mixture and keep refrigerated.
Combine all ingredients for dressing and mix well. Toss with vegetables and noodles.
Recipe courtesy of Canyon Ranch