In a saucepan, combine pear, 1/4 cup water, sugar, raisins if desired, butter, cinnamon, nutmeg. Cook over medium heat for 8-10 minutes or until fruit is tender. Combine cornstarch and remaining water until smooth; add to fruit mixture. Bring to a boil, stirring constantly. Cook and stir for 1-2 minutes or until thickened. Serve warm over cinnamon toast. Top with ice cream or whipped cream if desired.