01 - Set the oven to 425°F and line a baking sheet with parchment paper.
02 - Combine Brussels sprouts, olive oil, kosher salt, and black pepper in a large bowl, ensuring even coating.
03 - Place Brussels sprouts cut side down in a single layer on the prepared baking sheet.
04 - Bake for 20 to 25 minutes, flipping once halfway through, until edges are deeply golden and crispy.
05 - Whisk together maple syrup and balsamic vinegar in a small bowl.
06 - Transfer roasted Brussels sprouts to a serving bowl, drizzle with the glaze, and toss to coat evenly.
07 - Sprinkle toasted pecans and parmesan cheese if desired. Serve immediately.