Preheat oven to 300°F. Line baking sheet. Grind flours and nuts in food processor into a meal. Add seeds, flax, and salt, pulsing until well ground. Add shortening then water, pulsing into a ball of dough. Roll dough to 1/2" thick between two pieces of parchment paper. Peel one side off, place it back on then peel off the other side. Cut into desired shapes using cookie cutters or a knife. Bake 20min.