Directions:

Preheat an oven to 400 degrees F

Arrange all the vegetables in 3 or more pans, drizzle with the olive oil, and sprinkle with salt and pepper. Using your hands, toss the vegetables so that all of them are evenly coated.

Break up 1 of the rosemary sprigs and distribute it over the vegetables, or sprinkle the dried rosemary over vegetables. Roast until the vegetables are brown and tender. Baking time depends upon the baking container used (see below) and the size and variety of the vegetables. Transfer to a large platter and serve immediately with a sprig of rosemary on top.

Glazed terracotta baking dish: 1 1/4 hours
Glass dish: 1 hour
Cast-iron skillet: 50 minutes