Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.

Cut the broccoli into bite-sized florets and place them in a large mixing bowl.

Mince the garlic and add it into the bowl with the broccoli.

Drizzle with olive oil, sprinkle in salt, pepper, and red pepper flakes, and toss to combine.

Spread the broccoli mixture in a single layer on the baking sheet.

Roast the broccoli in the oven for 15 minutes, until bright green and slightly caramelized.

Sprinkle grated Parmesan cheese over the roasted broccoli and return to the oven for another 5 minutes.

Remove from oven, let cool for a minute, and serve hot.