Preheat oven to 425℉.
Mix dry ingredients. In a large mixing bowl, whisk together brown rice flour, flax meal, salt, and spices.
Form dough. Mix in the water, oil, and maple syrup. Use a wooden spoon or silicone spatula to mix until a shaggy dough forms, then use your hands to knead the dough until a ball forms. If the dough is too dry, add 1 more tablespoon of water and continue kneading to form a dough. If it’s too wet, sprinkle with a little more brown rice flour.
Divide dough in half. Place one dough ball back in the bowl covered with a kitchen towel. This helps prevent it from drying out.
Roll it out. Place the other dough ball on a piece of parchment paper and use a rolling pin to roll it out until it’s about 1/16 of an inch thick. The edges will crack when rolling it out, so piece it together with your hands. This is a very playful recipe.
Transfer to baking sheet. Transfer the parchment paper with rolled out dough onto your half sheet pan. If any cracks form during the transfer just piece them back together with your fingers.
Score the dough. Use a butterknife to score the dough into squares (don't cut all the way through). This helps the crackers break apart easily after they’ve baked. Continue until all the dough is used. You’ll need 2 baking sheets.
Bake. Bake for 16-17 minutes. They can go from soft to burnt really quickly, so check after 16 minutes. Then add one more minute if needed and quickly remove from the oven. I suggest baking one pan at a time on the middle rack for even cooking. Keep in mind that they’ll continue to crisp up as they cool. Let cool completely before breaking into squares and storing.