Preheat oven to 325 degrees. Cream together butter and brown sugar. Beat in 4 egg yolks. Mix together flour and spices and then add. Stir in cream, dates, raisins and nuts. Fill the shell;bake the pie until set, about 30 minutes. When cool take 2 or 3 egg whites and make a meringue as a topping. The dates are not necessary but a nice extra;without them and the nuts it is called a Kentucky or Arkansas pie. This is a great favorite in southern cafeteria and small town restaurants.