01 - Preheat your oven to 425°F (220°C). Line a standard baking sheet with parchment paper to prevent sticking.
02 - In a large mixing bowl, combine the trimmed and halved Brussels sprouts with the olive oil, kosher salt, and freshly ground black pepper. Toss thoroughly until all sprouts are evenly coated.
03 - Spread the seasoned Brussels sprouts in a single layer on the prepared baking sheet. For optimal caramelization, ensure the cut side of each sprout faces downwards.
04 - Roast the sprouts for 20 to 25 minutes, gently shaking the pan halfway through the cooking duration. Continue roasting until they are golden brown and crisp at the edges.
05 - While the Brussels sprouts are roasting, whisk together the balsamic vinegar and the optional maple syrup (or honey) in a small bowl to create the tangy glaze.
06 - Immediately upon removing the roasted Brussels sprouts from the oven, drizzle them generously with the prepared balsamic mixture. Toss gently to ensure an even coating over all the sprouts. Serve either hot or at room temperature.