In Spain it’s called “Tarta de Santiago” and there’s a cross on it made with sugar.
This recipe can be used to do the base of cakes, muffins, tarts, etc. It’s a spongy cake that doesn’t need baking powder, it naturally rises with the egg whites that have to be stiffly beaten.
There isn’t any sugar, fats nor flour, only honey, almonds and eggs, so it’s GAPS diet friendly.

gluten-free, dairy-free, white sugar free, Full GAPS diet, baking powder free, Seignalet

For my youngest daughter’s birthday I prepared her favorite cake: the brownie. I adapted the recipe to be gluten-free, dairy-free and egg-free.
I covered it with icing sugar and to make words I just melted some chocolate and wrote them with a device for baking decorations

gluten-free, dairy-free, eggs-free, baking powder free