Preheat oven to 420°F and line a large rimmed baking sheet with parchment paper.
Boil the broccoli florets with salt for 1-2 minutes, then strain and pat dry.
Sprinkle a thin layer of Parmesan cheese on the baking sheet and place the broccoli on top.
Gently smash the broccoli pieces down with a shot glass or small cup.
Season with salt, onion powder, and garlic powder.
Bake for 25-30 minutes until the cheese is golden brown and the broccoli is crispy.
Let cool slightly before serving.
