Cook the rice noodles according to the package directions. Drain and rinse well under cold water until completely chilled.
In a small bowl, whisk together the peanut butter, tamari, rice vinegar, lime juice, sesame oil, honey, ginger, garlic, and water until smooth.
In a large bowl, combine the chilled noodles, baby spinach, edamame, cucumber, carrots, bell pepper, and green onions.
Pour the dressing over the salad and toss until evenly coated.
Sprinkle with chopped peanuts, if using, and serve immediately or refrigerate until ready to enjoy.
