Preheat oven to 350F
In a large mixing bowl, mash ripe bananas with a fork or hand mixer
Add almond butter and eggs to the mashed bananas
Mix the wet ingredients well until smooth and well combined
Add cacao powder, coconut sugar, baking soda, and a pinch of salt to the wet ingredients. Mix until combined.
Gently fold ⅔ cup chocolate chips into the batter
Add the brownie batter to a parchment paper-lined 8x8 baking pan, then add the rest of the chocolate chips on top. Swirl a few spoonfuls of almond butter (optional).
Bake for 12 minutes
Take the brownie out of the oven and "slam" it on your kitchen counter gently and sprinkle sea salt on top (optional)
Bake for 9-10 more minutes (or until the preferred doneness).
Cut the brownie into squares once it cools down.