Wash and thoroughly dry carrots, then preheat your oven to 375℉ and line a baking sheet with parchment paper.
Cut the tops off of the carrots, if needed, and line them up on the baking sheet.
Mix together the balsamic vinegar, honey, olive oil, onion powder, garlic powder and salt until fully combined, then pour it over the carrots.
Either using your hands or a pastry brush (hands is easiest!), cover each carrot completely in the sauce.
Cover the carrots with foil and bake for 30 minutes. After 30 minutes, remove the foil and bake for 20 more minutes.