I actually use the low fat non dairy "whipped cream" with these to lower the fat content...and won first place at the county fair with these cookies. I used a lemon filling and called them "Lemon pastry cremes". These are a favorite of my family, friends, and co-workers. Really not difficult to make. I have also used rum, maple, mint, and almond flavoring for the filling as well. The mint go over really well at christmas time and I add crushed candy canes to the filling.