Preheat the oven to 350°F. Lightly grease a 9-inch round cake pan.
Cream the butter and sugar together until light. Add the eggs one at a time and beat until light. Beat in the molasses. In a separate bowl mix together the dry ingredients.
Mix together the 1/3 cup sugar, cinnamon and ginger. Peel the apples, slice them, dredge them in the sugar/spice mixture, and place them artfully in the prepared pan. Sprinkle on any leftover sugar/spice mixture.
Add the dry ingredients to the butter/sugar mixture alternately with the buttermilk. Pour this mixture over the apples and bake for 35 to 40 minutes.
When the cake is done (the surface should bounce back at you when gently pressed), remove it from the oven, invert a serving plate over the cake pan and, gripping the two securely, flip them over so the cake drops out onto the serving plate. If some of th