Line a baking sheet with parchment paper and set aside.
Blend oats in a food processor on high for about 1 minute until fine (should resemble flour). It works best if the oat flour is as fine as possible- you can also use a blender for this step.
Add all remaining cookie dough base ingredients to the food processor except for chocolate chips: flax seed, almond butter, maple syrup, vanilla and salt.
Blend until mixture is fully combined and forms a ball, stopping to scrape down as needed.
Stir in mini chocolate chips transfer cookie dough base to the parchment-lined sheet. Press dough into a rectangle shape roughly ½” thick.
To make chocolate topping, microwave chocolate chips and coconut in a microwave safe dish in 20 second intervals, mixing between until the chocolate has melted (40-60 seconds total).
Spread chocolate evenly over cookie dough, sprinkle with flaky salt if desired.
Refrigerate at least 30 minutes, until the chocolate has hardened. Cut into pieces and enjoy! Note: To prevent chocolate from cracking when you slice it, run a sharp knife under hot water and then dry it off before slicing.