Preheat oven to 375 degrees.
Red beets will stain golden beets. Handle and roast them separately to avoid this.
Peel beets. Wear gloves to avoid staining your hands.
Cut beets evenly-sized into 1-inch pieces.
Coat beets with olive oil, salt, pepper and balsamic vinegar.
Place beets in a single layer on a baking sheet or roasting pan.
Roast for 35-40 minutes, until easily pierced with a fork.