Preheat oven to 180ºC Spray an 8x11- 0.5x2 baking dish with Pam. Spray, as well, the bowl of a measuring tablespoon. Set both aside. Combine flour, sugar, ginger, and cinnamon in a bowl. Using a pastry blender or two knives, cut in shortening. Scoop out about one third cup of this mixture, and set aside for topping. Add the soda and salt to the buttermilk, stirring. It will foam. Set aside. Pour egg into larger amount of topping. Add the molasses, measuring it in the Pam sprayed tablespoon and pouring it in directly. Stir the batter a few times, then add the buttermilk mixture. Stir to blend ingredients, but don't worry about a few lumps. Turn batter into prepared baking dish and sprinkle with topping. Bake in preheated oven for 30 minutes, or until toothpick tests clean. Serve, if possible when still warm, plain or with whipped cream, ice cream, frozen yogurt, or baked apple.