Transform Brussels sprouts into a delicious and addictive side dish by making them in the Ninja Air Fryer. Toss the Brussels sprouts with olive oil, minced garlic, grated Parmesan cheese, and a sprinkle of salt and pepper. Air fry until they are crispy on the outside and tender on the inside. These garlic Parmesan Brussels sprouts are a flavorful and healthy addition to any meal.