Steam broccoli for 1-2 minutes. Broccoli should be crisp tender, and bright green. Rinse under cold water immediately.
Transfer broccoli to large bowl with green onions and red onions.
In a small bowl, whisk together the peanut butter, soy sauce, rice wine vinegar, sesame oil, ginger, garlic, and honey. Pour over broccoli and toss well.
Top salad with chopped cashews and toasted sesame seeds.