For those who make almond milk, the base of these crackers is the leftover pulp—basically fiber—that is strained out. Almond pulp resembles coconut flour in that it is essentially de-fatted nut meal/nut meat. Don't have almond pulp on hand? No worries. Use almond meal/flour in it's place. The brands I like are; Bob's Red Mill and Honeyville. It's also super easy to make using raw or blanched almonds, here's how.
So, I've sat on this recipe for over a year. When my late father was out visiting last Summer he went nuts over these dehydrator crackers.