Preheat the oven to 300F.

Combine the almond flour, coconut flakes, sweetener, cinnamon and salt together in a food processor.

Add the cold butter, and pulse until fully mixed.

Spread the mixture on a baking sheet lined with a silicone mat, then place another silicone mat (or parchment paper) over the top and use a rolling pin to flatten the mixture and press it together.

Remove the top mat then bake for 20 minutes or until golden brown - it will still be soft at this point, but will crisp up as it cools.

Let cool completely then break into small chunks and store in an airtight container.