Preheat oven at 400ºF (204ºC).

Cut off the ends of the Brussels sprouts with a knife and remove any bad leaves. You can also cut them in half or in quarters if you prefer.

Place them in a large bowl with the oil, garlic powder, salt and pepper and toss them to make sure they're covered well. The, spread them on a baking sheet and roast them for about 20-30 minutes or until they reach the golden brown color you prefer. Make sure to stir them halfway through the roasting process to make sure they're evenly browned. Serve immediately.