Combine the first 3 ingredients in a blender, and process until smooth. Set aside. Broil peach halves, cut sides up, 2 minutes or until lightly browned.
Place 1 peach half into each of 8 dessert bowls; spoon 1/4 cup ice cream into each peach half. Drizzle the raspberry mixture evenly over the ice cream. Sprinkle each serving with 1 1/2 teaspoons chopped mint.