Preheat the oven to 400 degrees. Place root vegetables on a large rimmed baking sheet in a single layer (use a second baking sheet if necessary to avoid overcrowding), and toss with olive oil, rosemary, garlic powder, salt and pepper until well combined.

Bake for 30-40 minutes, until tender and caramelized, rotating the pan(s) halfway through the cooking time. Cool slightly and enjoy!