I think that those cookies would make an excellent base for the tiramisu. Tiramisu is my favorite dessert also! I was actually thinking of that myself, but I'm already happy with the rev roll as a base for the tiramisu. The texture of the cookie will not be like the texture of the ladyfingers, the rev roll is actually closer to that texture, but I still think these cookies would make a good base as any kind of cake and there are recipes on the net for almond flour cakes! Let me know if you try it!