Preheat oven to 200°C (392°F).
In a large bowl, toss halved Brussels sprouts with olive oil, salt, pepper, and garlic powder.
Spread evenly on a baking tray, cut side down.
Roast for 25 minutes or until golden brown and crispy on the edges.
Meanwhile, prepare the glaze: simmer balsamic vinegar and maple syrup in a small pan until thickened (about 5–6 minutes).
Once Brussels sprouts are done, drizzle them with the warm glaze.
Toss gently so every piece gets coated in that glossy magic.
Sprinkle lemon zest and nuts on top before serving.
Serve hot and watch everyone turn into sudden Brussels sprouts fans.