Preheat the oven to 400F.
Line a baking sheet with foil, and set aside.
Wash and dry your broccoli well, and cut into small florets. Place on your prepared baking sheet and spray GENEROUSLY with nonstick spray. You can regular oil, but that usually turns out greasy and kinda soggy.
Season with salt, pepper, and garlic powder, and toss everything together.
Bake in preheated oven for 10-15 minutes, flipping the florets every 5 minutes, until lightly golden and caramelized.
Transfer to a serving dish, and top with grated Parmesan cheese, if desired. Enjoy immediately!