01 - Set the oven temperature to 425°F. Prepare a large baking sheet by lining it with parchment paper.
02 - Place all root vegetables in a large mixing bowl.
03 - Drizzle the olive oil over the vegetables. Add thyme, sea salt, black pepper, and the smashed garlic cloves. Toss thoroughly until evenly coated.
04 - Spread the coated vegetables evenly in a single layer on the prepared baking sheet.
05 - Roast in the oven for 35 to 40 minutes, turning the vegetables once halfway through, until they are golden and tender.
06 - Remove from oven, discard garlic cloves if preferred, and serve warm. Optionally, garnish with additional fresh thyme.