Preparation Preheat oven to 450 degrees. Prepare all vegetables as described above. Keep beets separately from the other vegetables. Toss with olive oil and pancetta, salt and pepper to taste. Place on a single layer on a cookie sheet. Roast in upper third of oven, stirring once halfway through roasting, until sprouts and carrots are brown on edges and tender, about 25 minutes total. Serve warm (mixing in beets in the serving dish).