Preheat the oven to 350 and line an 8x8 pan with parchment paper
In a medium bowl, whisk together peanut butter, coconut sugar, maple syrup and melted coconut oil. Whisk until texture is smooth.
Slowly whisk in your cocoa powder until smooth. Scrape down the sides of the bowl as necessary. Whisk in salt (optional) and flax eggs.
Slowly fold in in the oat flour until batter resembles a very soft dough, with no flour patches remaining.
Pour batter into your pan. Using a rubber spatula, smooth batter into an even layer.
Next, make the cookie layer. Add the nut butter, coconut oil, maple syrup, and vanilla extract to a bowl and mix until combined
Add the oat flour and mix, then add the chocolate chips, and let the dough sit for 5 minutes.
Take spoonfuls of the cookie dough and place them on top of the brownie layer until all the dough is used.
Bake at 350 for 20 minutes, then cover with tinfoil and bake for another 15-20 minutes.
Let the bars cool to room temperature before cutting.