Originally, moussaka is made with béchamel sauce. To have a gluten and cow's milk free moussaka, I came up with this one. I used goat's milk yogurt but will post it with normal yogurt. You can also use creamy Greek yogurt. In place of the pecorino, you can use parmesan cheese. If you don't have to be gluten free, you can use regular wheat flour in place of the rice flour and cornstarch.