Place the florets in a large bowl and sprinkle the seasoning evenly all over.
Toss the florets and seasoning until they are evenly distributed.
Transfer to a cookie sheet lined with parchment paper and bake at 425° for 30 minutes.
In the meantime, mix the sauce well.
Transfer the cauliflower to a serving bowl, drizzle the sauce, sprinkle scallions and finish with more sauce.