In blender, sprinkle gelatin over cold milk and let stand until gelatin is moistened. Add scalded milk. Cover and process at high speed until gelatin dissolves, about 2 minutes.
Add brown sugar, cinnamon, salt, nutmeg, ginger and table cream. Cover and process at high speed for about one minute.
Add pumpkin and proceed at high speed for about 20 seconds, or until all ingredients are thoroughly combined.
Remove center top cover and, with blender still running, add ice cubes one at a time. Process at high speed until ice is melted.
Allow to stand for 10 minutes to thicken mixture. Turn into cooled pie shell. Sprinkle with reserved crumb mixture. Chill until set. This should make about 8 servings.