Preheat the oven to 400 degrees. Place the clean carrots in a large mixing bowl and drizzle with oil. Toss with your hands to coat thoroughly. Add the onions, garlic and spices. Toss well to coat the carrots with the little bits of onion, garlic and spices. Spread the carrots across a silpat lined or foil lined baking sheet and top with any onions or garlic remaining in the bowl. Sprinkle with additional salt if desired.
Bake for 15 minutes, or until the carrots are tender when pressed with a fork. Enjoy!