Preheat your oven to 200°C (390°F). Line a baking sheet with parchment paper or lightly oil it to prevent sticking.
Peel the carrots if desired, then cut them into uniform sticks or rounds about 2-3 inches long. This ensures even roasting and caramelization.
In a small saucepan, melt the unsalted butter over low heat. Add the sliced garlic and cook gently for 1-2 minutes until fragrant and slightly golden, but not browned—this releases their nutty aroma.
In a large mixing bowl, toss the carrots with the garlic butter mixture, ensuring each piece is evenly coated. Drizzle with olive oil if you'd like a little extra shine and help with browning.
Spread the coated carrots in a single layer on the prepared baking sheet. Sprinkle generously with salt and freshly ground black pepper.
Roast in the oven for 25-30 minutes, shaking or turning the carrots halfway through. Keep an eye on them—edges should be golden and caramelized, and carrots tender when pierced with a fork.
Once done, remove from the oven and let rest for 5 minutes. The aroma of garlic and butter will be rich and inviting.
If desired, sprinkle chopped parsley or chives on top for a fresh, vibrant touch. Serve hot, allowing the flavors to meld in every tender, caramelized bite.