In a food processor, pulse 1 cup of the rolled oats into a powder. Set aside.
In the bowl of a stand mixer fitted with the paddle attachment, combine remaining 1 1/3 cups of oats, coconut flakes, tapioca flour, salt and brown sugar. Mix on low speed until everything is evenly combined.
Add in corn syrup or brown rice syrup and melted coconut oil to the mixture and mix again until everything is evenly incorporated.
Scoop out half of the cookie batter into an 8×4-inch loaf pan lined with parchment paper (or foil). Press down firmly to create an even layer. Sprinkle chocolate chips over top.
Scoop the remaining cookie batter over top and spread evenly. Sprinkle with remaining rolled oat powder and press down gently to flatten.
Place in the freezer for 2 hours until set. Cut into 9 bars or squares, store in an airtight container, and enjoy!