Peel and large dice all ingredients about 1 inch x 1 inch (don’t peel). Preheat oven to 400 degrees
In a large bowl, combine all ingredients, sprinkle generously with salt and pepper, coating thoroughly with rosemary olive oil.
Roast in oven uncovered on greased baking sheet, turning occasionally until tender and golden brown, for about 45 min.
Remove from the oven and drizzle with rosemary olive oil again before serving.