Preheat the oven to 400 degrees F.
In a large mixing bowl, cream the butter and sugars. Add the eggs into sugar mixture, one at a time, incorporating each egg into the mixture. Add spices and salt. Stir potatoes into sugar mixture; add milk and mix thoroughly. Pour into a greased 2-quart baking dish.
Bake for 50 to 60 minutes.
To serve, spoon Tennessee Whiskey Sauce over and top with whipped cream.
