balsamic roasted carrots

1 small bag baby carrots
1/4 C extra virgin olive oil, divided
1 T balsamic vinegar
1/2 tsp salt
1/4 tsp freshly ground black pepper

Preheat oven to 450.  In a roasting pan, combine the carrots, 2 T olive oil, vinegar, salt and pepper.  Toss to coat.  Roast for 20 - 25 minutes, tossing occasionally, until lightly caramelized and tender but still firm.  Drizzle with the remaining oil.