01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, toss the trimmed and halved Brussels sprouts with olive oil, balsamic vinegar, honey, salt, and black pepper until evenly coated.
03 - Spread the Brussels sprouts cut side down on the prepared baking sheet in a single layer, ensuring even spacing for proper caramelization.
04 - Roast for 20–25 minutes, tossing once halfway through, until the sprouts are golden brown and nicely caramelized.
05 - Transfer to a serving dish. Sprinkle with toasted nuts or grated Parmesan if desired, and serve immediately.