Preheat your oven to 350 F.
In a medium sized bowl, pour in your tahini, eggs, sugar, coconut oil and vanilla extract. Whisk for 1-2 minutes until smooth.
Pour in your almond flour, oat flour, baking soda and salt. Stir together until a dough forms.
Fold in your chocolate chips and mix well.
Line a medium baking dish (about 11u0022 by 7u0022) with parchment paper. Flatten your dough into the pan and top with extra chocolate.
Bake for about 18-22 minutes, until the edges are brown and a toothpick comes out clean. If you prefer it more well done, bake for about 25-30 minutes.
Let it cool for 10-15 minutes. Top with flakey sea salt and slice into 12 bars.
Store in an airtight container for up to 5 days, or freeze for up to 2 months.