I just made this and it's a big hit in the Rain Man household:
https://smittenkitchen.com/2008/04/shaker-lemon-pie/
It was easy to make too. I'll note that it requires some patience because you make the first part and then have to let it sit for 24 hours before you finish it. But it's worth it. It has a great flavor that lingers in your mouth long after you've finished your piece of pie.