Preheat the oven to 425°. Line a large baking sheet with parchment paper.
Step 2
Place all the vegetables in a large mixing bowl, add the oil, salt, pepper, rosemary and give them a good toss. Arrange the mixture in a single layer on the baking sheet. If they don't all fit use two baking sheets.
Step 3
Bake at 425° for 30-40 minutes or until all vegetables are tender and lightly browned.
Step 4
Transfer roasted vegetables to a large serving platter and serve warm.