Preheat oven to 350 degrees
In a large mixing bowl stir together the almond flour, egg and salt (if using) until fully combined and smooth. Press the dough into a tight ball. Massage the ball slightly just to make sure all ingredients are smooth
Line a clean work surface with parchment paper. Make sure the parchment paper is as long as a large baking sheet
Place the dough ball onto the parchment paper Press or roll out the dough as thin as possible without it being see through (think the thickness of a wheat thin about 1/16 of an inch)
Lift the parchment paper with the dough and place it onto a large baking sheet. Use a knife or pizza cutter and cut the dough into the desired size squares. (think wheat thins)
Spread the squares throughout the baking sheet. Bake 10-12 minutes or until golden on the edges.
Remove from the oven. The crackers will still be soft but will crisp up as they cool
Allow to cool on the pan at least 15 minutes or until firm. Transfer to wire rack and allow to cool completely. Eat immediately or store in an airtight container at room temperature of up to 1 week