Follow the recipe for Oven-Charred Broccoli; while the broccoli is roasting, in the same bowl used to toss the broccoli with oil and seasonings, whisk together 3 tablespoons grapeseed or other neutral oil, 3 tablespoons seasoned rice vinegar, 3 tablespoons soy sauce, ½ cup roasted peanuts (finely chopped), 1 teaspoon pepper flakes and 2 scallions (thinly sliced on the diagonal). As soon as the broccoli is done, scrape it into the bowl and toss. Taste and season with kosher salt and black pepper. Transfer to a serving dish and sprinkle with another 2 scallions (thinly sliced on the diagonal) and toasted sesame seeds (optional).