Preheat oven to 425°F. Line a large sheet pan with parchment.
Pat the cauliflower dry. Toss with olive oil in a large bowl to coat.
Sprinkle in cornstarch, salt, pepper, garlic powder, and smoked paprika. Toss again until evenly dusted.
Spread florets on the pan, leaving space. Bake 15 minutes, then flip and roast 10–12 minutes more until browned and tender.
While it roasts, simmer honey, sriracha, soy sauce, rice vinegar, minced garlic, ginger, sesame oil, and red pepper flakes in a small saucepan for 2–3 minutes until glossy.
Transfer hot cauliflower to a bowl. Pour over the warm sauce and toss gently to coat every piece.
Return glazed cauliflower to the pan and bake 3–5 minutes to set the glaze.
Finish with lime juice. Shower with sesame seeds and scallions, then serve immediately.
Notes
Variation: Swap honey for maple syrup to make it vegan, or add roasted chickpeas for extra protein and crunch. Serve over steamed rice or stuffed into lettuce cups. Store leftovers airtight up to 3 days; reheat in a hot oven or air fryer to revive crisp edges.This recipe is an original creation inspired by classic Sweet and Spicy Baked Cauliflower flavors. All ingredient ratios and instructions are independently developed.