Mill the grains into flour.
Add all ingredients to a mixing bowl.
Mix together with a sturdy silicone spatula, wooden spoon, or with your hands.
Roll out from the center toward the outside to fill a large baking sheet of parchment. There will be extra. The thinner the crispier, the thicker, the more sturdy your crackers will be. I did 1/8"
Cut into desired shapes with either cookie cutters or a pastry roller. Dock the crackers with a fork to prevent puffing up during the bake. I used a Betty Bossi cracker roller.
Sprinkle with sea salt, pepper or whatever herbs you like. I used rosemary, thyme, fresh ground pepper and coarse salt. Then, I lightly pressed them into the dough before baking.
Bake in oven. I baked at 375 F convection for 8-10 minutes, until browned to your liking. They will crisp up as they cool.
For further, and sustained crunch, dehydrate your crackers until as crispy as you like.
Store in a glass container or baggie to keep outside air from getting in.