01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, toss the Brussels sprouts with olive oil, salt, black pepper, garlic powder, and crushed red pepper flakes until evenly coated.
03 - Spread the Brussels sprouts in a single layer on the prepared baking sheet, cut side down for optimal caramelization.
04 - Roast for 20–25 minutes, stirring or shaking the baking sheet halfway through, until the sprouts are golden brown and crisp at the edges.
05 - Remove from the oven and drizzle with balsamic glaze or lemon juice if desired. Serve immediately.