This is lovely fall dessert that should be served warm, or at least the sauce served warm and the cake at room temperature. It's a great complement to any fall dinner menu.
Grease and flour a bundt pan or 9" x 9" square baking dish. Heat oven to 350 degrees.
Cream shortening and sugar in a large bowl. Add egg and molasses; whisk thoroughly.
Sift all dry ingredients and spices together in small bowl. Mix the dry ingredients into the sugar mixture alternately with the buttermilk, about 1/3 at a time. Remember to start and end with the dry ingredients. Whisk until smooth after each addition.
Pour batter into prepared pan and bake for 40-50 minutes.
Lemon Sauce
While cake is baking, make the lemon sauce. Or, if you make the cake early in the day, try to make this closer to dinner time to keep warm.
In a small saucepan mix the sugar, cornstarch, and nutmeg. Gradually pour over the boiling water stirring constantly. Cook about 1 minute or until the sauce begins to thicken. Remove from heat.
Add butter, lemon juice, and lemon zest, blend thoroughly. Stir a little of the sauce into the beaten egg, then add the egg mixture to the saucepan and combine thoroughly.
Serve the cake with a generous helping of sauce drizzled on top of each slice.
Notes
You can substitute butter for the shortening. If you want to make it nutty, you can add 3/4 cup of chopped walnuts to the cake batter before baking.