Preheat your oven to 350F.
Whisk together the oat flour, salt , baking soda and cinnamon. In a separate bowl, whisk together the almond butter, egg, maple syrup and vanilla extract.
Gradually add the dry ingredients into the wet, folding in with a spatula.
Pour into an 8x8' parchment-lined baking sheet.
Mix together your sugar and cinnamon to make a cinnamon sugar mix, then sprinkle on top of the batter.
Bake for 20-22 minutes at 350F, or until you can insert a toothpick and it comes out clean.
This will last covered in the fridge for 5-7 days.