Preheat your oven to 425°F and line a large baking sheet with parchment paper for easy cleanup.
In a large bowl, whisk together the olive oil, honey, melted butter, minced garlic, thyme, salt, pepper, and cinnamon if using.
Add the carrot sticks to the bowl and toss until they're completely coated in that gorgeous honey mixture.
Spread the carrots in a single layer on your prepared baking sheet, making sure they have some space between them so they roast instead of steam.
Roast for 25-30 minutes, flipping them halfway through, until the carrots are tender and the edges are beautifully caramelized.
Remove from the oven and immediately drizzle with lemon juice and sprinkle with fresh parsley.
Give them one more gentle toss and transfer to your serving dish while they're still hot and glistening!