Preheat your oven to 400°F (200°C). This high temperature is crucial for achieving that perfect caramelization.
Wash the Brussels sprouts thoroughly under cold water. Trim the ends and remove any yellow or damaged leaves. Then, cut them in half to help them roast evenly.
In a large mixing bowl, combine the halved Brussels sprouts with 1 tablespoon of your chosen oil, ¼ cup of Parmesan cheese, garlic powder, kosher salt, and pepper. Toss everything together until the sprouts are well-coated in the mixture.
Spread the seasoned Brussels sprouts out in a single layer on a baking sheet, ensuring they are not crowded. This allows them to roast properly rather than steam.
Place the baking sheet in the preheated oven and roast for about 20-25 minutes. Halfway through the cooking time, give the sprouts a good toss using a spatula or tongs to ensure even roasting.
In the last few minutes of roasting, sprinkle additional Parmesan cheese over the Brussels sprouts for an extra cheesy finish. Return them to the oven until the cheese is melted and bubbly.
Once they are golden brown and crispy, remove the Brussels sprouts from the oven. If desired, garnish with fresh parsley for a pop of color and freshness. Serve immediately as a delightful side dish!
