01 - Preheat the oven to 425°F and line a large baking sheet with parchment paper.
02 - Combine all the prepared root vegetables in a large mixing bowl.
03 - Drizzle vegetables with olive oil, sprinkle with thyme, sea salt, and black pepper, then add the smashed garlic cloves. Toss thoroughly to coat evenly.
04 - Spread the vegetables in a single layer on the prepared baking sheet to ensure even roasting.
05 - Roast in the preheated oven for 35 to 40 minutes, turning once halfway through, until golden brown and tender.
06 - Remove from oven, discard garlic if preferred, and serve immediately, optionally garnished with extra thyme.