Place the apples, pears, vanilla bean and 2 tablespoons water in a medium-sized saucepan over medium heat. Stir. When the water is boiling, reduce the heat to low, cover, and cook until the fruit is tender through, checking frequently to make sure the fruit isn’t sticking to the bottom of the pan. Add water, 1 tablespoon at a time, and stir if necessary. Remove the pan from the heat, crush the fruit with a potato masher or a fork, and let cool to room temperature.