Preheat your oven to 400°F (200°C). This high temperature is key for achieving that crispy exterior we all love.
Rinse the Brussels sprouts under cold water and trim the ends. Remove any yellow or damaged outer leaves. Cut each sprout in half lengthwise for even cooking.
In a mixing bowl, combine the halved Brussels sprouts with 3 tablespoons of extra-virgin olive oil, 1/2 teaspoon of kosher salt, and a few cracks of fresh black pepper. Toss until each sprout is well-coated.
Spread the Brussels sprouts in a single layer on a large baking sheet, cut side down. This helps achieve maximum caramelization.
Roast in the preheated oven for about 20-25 minutes, or until the sprouts are tender and golden brown. Halfway through, give them a good shake to ensure even cooking.
Once roasted, remove the sprouts from the oven and drizzle with 2 tablespoons of fresh lemon juice. Toss in the freshly grated cheese, allowing it to melt slightly from the heat of the sprouts.
Transfer the roasted Brussel sprouts to a serving dish and enjoy them warm as a delicious side or a light main dish.