Peel vegetables and cut into 1/2 -inch cubes. Place all cut vegetables into a large bowl EXCEPT for the beets. Place those in their own smaller bowl. This will prevent the red juice from getting all over your other vegetables when you toss them in oil.
Pour one tablespoon of the olive oil over the beets and toss them in it until coated.
Pour the remaining oil over the other vegetables tossing them until coated.
Sprinkle ½ teaspoon of salt, ½ tablespoon of rosemary, and a pinch of black pepper over the beets. Sprinkle the remaining salt, rosemary, and pepper over the other vegetables. Toss both bowls so the beets and vegetables are coated in the seasoning.
Place root vegetables on your baking sheet and then evenly distribute the beets amongst the vegetables.
Bake for 45 minutes until softened and slightly browned.
Remove from oven and let cool slightly before serving.