For a richer flavor, you can substitute dark molasses for standard molasses.
This cake stores well covered at room temperature for up to 3 days, or in the refrigerator for up to a week.
To freeze, wrap tightly in plastic wrap and foil. Thaw at room temperature before serving.
If you prefer a less dense texture, you can substitute 1/4 of the flour with whole wheat flour, but note that the texture will be slightly heavier.