Creating an amazing dish with Brussels Sprouts is easy with these simple steps:

1. Preheat Your Oven: Set your oven to 400°F (200°C) to get it nice and hot for roasting.
2. Prepare the Brussels Sprouts: Rinse the Brussels Sprouts under cold water and trim the stem ends. If they are large, cut them in half to ensure even cooking.
3. Season: In a large mixing bowl, combine the Brussels Sprouts with olive oil, garlic powder, salt, and pepper. Toss well to coat each sprout evenly.
4. Spread on a Baking Sheet: Arrange the seasoned Brussels Sprouts in a single layer on a baking sheet lined with parchment paper.
5. Roast: Place the baking sheet in the preheated oven and roast for about 20 minutes, or until the outer leaves are crispy and the insides are tender, stirring halfway through.
6. Finish with Balsamic Vinegar: Drizzle the roasted Brussels Sprouts with balsamic vinegar right after taking them out of the oven, then toss lightly to combine.
7. Add Optional Toppings: If desired, sprinkle the grated Parmesan cheese and chopped walnuts over the sprouts for an extra depth of flavor.
8. Garnish: Finish with a sprinkle of fresh parsley for a pop of color and freshness.

These steps will guide you in preparing this incredible dish that will make Brussels Sprouts the star of your table!