
Preheat oven to 425°F. Line a large baking sheet with parchment paper.
Place brussel sprouts on the prepared baking sheet, drizzle olive oil on top, and sprinkle with garlic powder, salt and pepper.
Toss to coat evenly, and then roast in the preheated oven until golden brown, about 20-25 minutes, depending on their size. Shake the pan every few minutes for even roasting.
Transfer the brussel sprouts to a serving dish.