oomis, I kept egg/nut free desserts in back of my mind for a while and I came up with a few ideas, try them at your own risk 🙂 And please update us after
-I’m not sure if ladyfingers have eggs or nuts, but you can grind them and probably use them in place of flour in any recipe or in a fruit crisp (I’ve done a fruit crisp in the past). Or if you find a cookie (or cracker, you can add sugar) that meets the criteria would work.
-If you eat gebrokts, you can do a napolean style something with matzah- maybe cover in chocolate and use a whipped topping (I’m assuming egg free) in between the layers. Or ladyfingers if they’re egg free.
-You might have an easier time taking a recipe and working from that. I saw online that mashed banana can replace eggs so that may be a good option for you.
Chag Kasher v’sameach!