Preheat oven to 350º and move oven racks to the middle so you can use two cookie sheets at once.
Combine dry ingredients in the bowl of food processor and pulse lightly to combine.
Add wet ingredients, and pulse intermittently until the dough comes together.
Turn dough out onto a floured board, adding additional oat flour until dough is no longer sticky.
Cut dough into whatever shapes you fancy, placing onto parchment-lined cookie sheets.
Bake for 30 minutes, then turn off the oven but leave the cookies inside to cool for extra crunch.
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