Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a large mixing bowl, whisk together the oats, oat flour, cinnamon, baking soda, and salt.
In a separate medium bowl, stir together the almond butter, maple syrup, melted coconut oil, and vanilla extract until smooth.
Pour the wet ingredients into the dry ingredients and stir until a thick dough forms.
Scoop approximately 2 tablespoons of dough per cookie and roll into balls.
Place balls on the prepared baking sheet and flatten slightly into a disc shape.
Bake for 10 to 12 minutes until the edges are lightly golden.
Allow cookies to cool completely on the baking sheet to firm up.
Whisk together the powdered sugar and almond milk to create a glaze.
Drizzle the glaze over the cooled cookies in a spiral pattern.