Preheat the oven to 400 F.
Rinse and dry brussel sprouts, and split each sprout in half trimming off the stems. In a small bowl, stir the oil and garlic. In a large bowl, toss the brussels with oil and garlic mixture.
Arrange the Brussels Sprouts along the perimeter of the baking sheet, flat side down. Sprinkle with sea salt. Transfer the baking sheet to the oven.
While Brussels Sprouts are roasting, use the same small bowl of the garlic/oil, and whisk together the balsamic and honey.
Remove from the Brussels from the oven at the 15 minute mark. Gently brush each sprout with the honey/balsamic mixture and give it a quick toss. Transfer back to the oven.
Roast for another 10 minutes, or until browned and crispy.
Sprinkle with additional sea salt and serve hot!