Next, prepare the peanut sauce. In a 2-cup liquid measuring cup, whisk together the ingredients until well blended. Set aside.
Prepare the broccoli rabe by rinsing it well and patting it dry. Slice off the tough lower ends of the stems and discard. Slice off any remaining stems that are over ¼-inch in diameter and discard those as well, since they will be too fibrous even after cooking.