Preheat your oven to 400°F.
Line a large baking pan with parchment paper.
Put a pot of water on the stove and bring it to a boil.
Add the broccoli florets to the boiling water and cook for 3-4 minutes until they are bright green and slightly tender.
Drain the broccoli and transfer it to the prepared baking pan.
Melt the butter in a small saucepan over medium heat, then stir in the minced garlic and cook until it’s fragrant.
Pour the melted garlic butter over the broccoli.
Sprinkle with salt, pepper, and lemon juice giving it a gentle toss to coat.
Top the broccoli with the grated Parmesan cheese and place it in the oven.
Roast for 12-15 minutes, or until the cheese is golden and melted.