Cook the pasta according to package directions. Drain and rinse under cold water to stop the cooking process. Set aside.
In a large bowl, combine the bell pepper, cucumber, scallions, carrots, edamame, and avocado. Set aside.
Add the peanut dressing ingredients to a blender, blending until smooth.
Add the rinsed and drained pasta to the bowl with the vegetables. Pour the peanut dressing over top. Toss to combine, adding additional salt and pepper, if needed.
Serve immediately, or store in the fridge for a few hours prior to serving.