Preheat oven to roast at 375°F. Lay foil or parchment on baking sheet. Set aside.
Wash and rinse the brussels sprouts. Peel the loose, outer leaves. Trim the end, then cut brussels sprouts in half.
In large bowl, toss together brussels sprouts, minced garlic, 2 Tablespoons of olive oil, and 3 Tablespoons of balsamic vinegar, stirring until combined. Season with salt and pepper.
Transfer brussels sprouts on prepared sheet pan. For crispier edges, place the brussels all faced down on the sheet pan. Make sure they are in a single layer.
Bake at 375°F for 20 minutes, then gently toss and mix the brussels sprouts.
Continue baking for another 5-15 minutes, or until the brussels sprouts are tender. Add additional salt and pepper to taste if needed. Serve warm.