Preheat the oven to 300 F. Combine the dry ingredients from the almond flour to the chia seeds into a mixing bowl. Mix well with a spoon to combine.
Next, add all the wet ingredients from the water to the vanilla extract . Use the spoon to mix the dough into a homogenous mass. The dough will be fairly stiff.
Place the dough between two pieces of parchment paper and roll the cereal thinly (about 1/4” or so). You want the dough thin, but not too thin. Since this recipe contains no egg, it will be a bit crumbly. Remove the top piece of parchment paper. Using a pizza cutter or a paring knife, score the dough into small squares about ½” x ½.”
Slip the bottom piece of parchment paper with the dough attached onto a baking sheet. Then, bake for 25-27 minutes until the dough is baked through and brown on the edges. The dough will still be soft at this point.
Allow the dough to cool completely on the baking sheet so it will harden/crisp. Once cooled, break the cereal into pieces along the score lines. Store the cereal in an airtight container for up to three days.