Preheat oven to 350F degrees. In a medium bowl whisk together the dry ingredients. (First 5 ingredients)
Cream butter and sugars together. Add egg, sour cream, apple sauce and baking soda. Add the flour mixture slowly, mix well. Pour batter into prepared pans and bake for 30 min. or until a cake tester comes out clean. Cool for 5 minutes and then remove from pan, cool completely on racks.
For the frosting, beat the cream cheese with a hand mixer until soft and light. Add the vanilla and slowly add 1/2 cup of icing sugar at a time and blend in. Spread the icing on top of the cakes and decorate with the candied ginger.