I don't have a sweet tooth... so I am bad at this answer. But you can peruse through the desserts section of my website at your leisure...there's honestly not much there--but maybe it will help you come up with an idea? https://ketolish.us/keto-dessert-recipes/

I've also done sugar-free cheesecake topped with lemon zest and made a coconut-and-crushed-macadamia nut crust for it, which was ridiculously good. I don't know why I didn't publish it. Anyway, again, rotten at this answer. The internets are full of bazillions of diabetic desserts. They're just not my thing lol