Preheat oven to 325°F and line a 8x8 inch square pan with parchment paper.
Make the Brown Sugar Cinnamon Layer
In a small bowl, combine coconut sugar, cinnamon, coconut oil, almond butter, vanilla, and salt. Mix well.
Make the Shortbread
In a medium bowl, combine fresh milled flour, salt, vanilla, maple syrup, and coconut oil. Stir until well combined. Divide the mixture in half and spread half of the mixture into the bottom of the pan. Layer the brown sugar mixture over the top, as evenly as possible. Top with the remaining shortbread mixture. I found the best method for this is to break off a small bit of the shortbread dough and flatten it out with your fingers. Then layer it onto the brown sugar mixture, pressing the pieces together as you go.
Bake for 30 minutes, until golden brown around the edges.
Make the Glaze
Combine all ingredients in a bowl and mix until smooth and no more clumps remain.
Once the bars are full cooled, cover them in the glaze and allow it to set. Slice the bars and store in an airtight container in the fridge for 7-10 days.