Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.

In a large mixing bowl, combine your peeled and cut carrots. Drizzle with olive oil and honey, add thyme leaves, salt, and pepper.

Toss the carrots thoroughly until coated with the olive oil and honey mixture.

Spread the coated carrots evenly in a single layer on the baking sheet.

Roast the carrots for 20-25 minutes, stirring halfway through.

If using, add butter to the roasting pan during the last 5 minutes.

Taste and adjust with additional salt and pepper as desired.

Transfer to a serving dish and garnish with fresh thyme leaves.