Cream together the butter and sugar until light and fluffy. Beat in the yolk until smooth. Combine the flour, baking powder and salt and gently fold into the butter mixture with a rubber spatula. Mixture will be crumbly.

With Almonds: Add 1/2 cup finely chopped sliced or slivered almonds to the dry ingredients of Cheesecake Crust.

With Pecans: Add 1/2 cup finely chopped pecans to dry ingredients of Cheesecake Crust.