Bake squash cut side down at 350° for 45 minutes or until tender. Remove from heat and cool slightly. While squash is baking, fry bacon until medium crisp. Cool and then crumble into pieces and set aside. In same fry pan, saute onion until tender. Scoop 1/2 the squash into blender along with 2 cups of the broth along with the sautéed onions and then blend until smooth. Pour into large sauce pan. Scoop the remaining squash into blender along with the remaining broth, sugar, cream cheese, pepper and ginger. Blend until smooth then adding to the sauce pan. Heat over medium heat for 10-15 minutes. Place some crumbled bacon in each soup serving bowl. Ladle soup over the bacon.
For creme' fraische mix together ingredients and leave at room temperature for hours (preferably overnight)
To serve top with creme' fraische. Add candied ginger and/or toasted pumpkin seeds, if desired. Serves 4