Need a Cracker recipe

I have been doing the GFCF diet for about two years on and off. A couple of time when finances are tight it is hard to do. I recently came across the GFCF Culinary videos with Betsy Hicks and Chef Vest (a Four Part series) and I am learning a lot. They shared a tapioca flour cracker recipe I want to make but I must be missing an ingredient. Does any one has it ? Thanks.