1. Prepare the Brussels Sprouts: Start by washing your Brussels sprouts thoroughly. Trim off the tough ends of each sprout and remove any loose or discolored outer leaves. For larger sprouts, you can cut them in half through the stem to ensure even cooking. Smaller sprouts can be left whole.

2. Preheat Your Oven: Preheat your oven to 400 F (200 C). This high temperature is crucial for achieving that perfect roasted texture – tender on the inside and slightly crispy on the outside. Line a large baking sheet with parchment paper for easier cleanup, if desired.

3. Toss with Olive Oil: In a large bowl, combine the trimmed Brussels sprouts with the olive oil. Toss them well to ensure every sprout is lightly coated. The oil helps them crisp up and prevents sticking to the baking sheet.

4. Season the Sprouts: Add the salt and black pepper to the bowl with the oiled sprouts. Toss again until the seasoning is evenly distributed.

5. Add Maple Syrup: Pour the maple syrup over the seasoned Brussels sprouts. Toss one last time to ensure all the sprouts are coated with the sweet glaze. This step is what gives them their signature sweet and savory flavor.

6. Arrange on Baking Sheet: Spread the Brussels sprouts in a single layer on the prepared baking sheet. Make sure they are not overcrowded; this is important for proper roasting and browning. If your baking sheet is too small, use two sheets to avoid steaming the sprouts instead of roasting them.

7. Roast to Perfection: Place the baking sheet in the preheated oven and roast for 20-25 minutes. Halfway through the cooking time (around 10-12 minutes), give the sprouts a good stir or flip them with a spatula to ensure even browning and caramelization on all sides.

8. Check for Doneness: The Brussels sprouts are ready when they are tender when pierced with a fork, slightly caramelized, and have crispy edges. Remove them from the oven and serve immediately.