Preheat the oven to 400°. Set the beets in a small baking dish, add 1 cup of hot water and cover with foil. Bake for about 45 minutes, until the beets are tender when pierced with a knife. Drain and let stand until cool enough to handle. Using a paper towel, rub the skins off the beets. Cut the beets into 1/2-inch dice.