01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together olive oil, balsamic vinegar, honey, minced garlic, salt, and black pepper until well combined.
03 - Add trimmed and halved Brussels sprouts to the bowl and toss thoroughly to coat evenly with the glaze.
04 - Spread Brussels sprouts cut-side down on the prepared baking sheet in a single layer, ensuring they are not overcrowded.
05 - Roast for 22 to 25 minutes, stirring once halfway through, until sprouts are golden brown and crispy at the edges.
06 - Transfer to a serving dish, drizzle with any remaining glaze from the pan, and toss gently. Garnish with toasted nuts and Parmesan if desired. Serve immediately.