Preheat your oven to 400°F and position a rack in the upper third. This ensures optimal heat circulation for roasting.
On a large rimmed baking sheet, toss the halved Brussels sprouts with olive oil, salt, and pepper, ensuring they're well coated. Arrange them cut side down for a crispier texture.
Roast in the preheated oven for 20 to 30 minutes. The sprouts should be dark and crispy on the outside, yet tender inside. Keep an eye on them to prevent burning.
DEVOUR! Serve the roasted Brussels sprouts warm, seasoned with additional salt and pepper if desired.