Preheat the Oven: Preheat your oven to 425°F (220°C).
Prepare the Cauliflower: Wash the head of cauliflower and cut it into bite-sized florets.
Season the Cauliflower: In a large mixing bowl, toss the cauliflower florets with olive oil, minced garlic, salt, and pepper until evenly coated.
Arrange on Baking Sheet: Spread the seasoned cauliflower florets out in a single layer on a baking sheet.
Bake: Roast in the preheated oven for 25-30 minutes, stirring halfway through, until the cauliflower is golden brown and crispy on the edges.
Optional Garnish: Remove from the oven and optionally sprinkle with Parmesan cheese or fresh herbs before serving.