Preheat oven to 425 degrees.Wash carrots thoroughly and cut off the green tops. Peel if desired.Toss the carrots in olive oil. Add the garlic and salt and pepper and stir until thoroughly combined. Place the carrots in a baking dish in a single layer and pour the leftover oil mixture evenly on top.Bake for 10 minutes, then turn over. Cook for the remaining 15 minutes or until the carrots are tender and they begin to caramelize. Garnish with freshly chopped parsley or chives.