Line an 8x8 square pyrex dish with parchment paper.
In a medium bowl combine ghee, cashew butter, coconut sugar and vanilla extract and stir to combine.
To the bowl add oat flour, quick oats, salt and ½ cup of mini chocolate chips.
Press the cookie dough mixture into the pan in an even layer.
In a bowl melt the remaining 1 ½ cups of chocolate chips and melt them in the microwave at 30 second intervals.
Pour the melted chocolate over the dough and spread into a smooth later. Top with flakey sea salt if desired, then place in the refrigerator to harden.
Notes
If you don't have oat flour, just put oats in a blender or food processor and process until it turns to flour.
If you don't have quick oats you can put rolled oats in a food processor and pulse just a few times to break them down a bit.