Preheat the oven to 350° and line an 8x8 baking dish with parchment paper.
In a small bowl, whisk togethet the almond butter, egg, sugar and salt. Set aside.
In a saucepan, melt the butter, sugar and salt together. Let cool for five minutes and then whisk in the eggs and vanilla.
In a medium bowl, whisk togethe the flour, cocoa powder, salt and baking powder. Pour in the wet brownie ingredients and mix well. Add in the chocolate chips.
Pour the brownie batter into the pan. Scatter the almond butter batter over the brownie batter. Gently swirl them together using a spoon or spatula. Don't over mix because you still want to see the almond butter.
Bake for 28-32 minutes. A toothpick should come out clean. Let the brownies cool before removing from the pan. They will be very cumbly when hot.
Once cool, remove from the pan and cut into 16 squares. Sprinkle with course sea salt and enjoy!