How can i create a closely matched "Almond Paste" (for croissant) without using almond meal/paste/butter/products/etc? I have a nut-free almond flavour that should be okay for the flavouring component, looking more for a texture match here.  Any ideas? 
I make a nut free frangipane using rice flour in place of almond meal. I think a mix of this with egg, sugar and butter would work. The rice flour has the same slightly gritty texture and doesn't add gluten to the mix. 