In a large bowl combine the egg, coconut sugar, creamy almond butter, oil, vanilla and almond extracts, and vinegar. Mix for 3-4 minutes until well combined.
Into the bowl, add the flour, cocoa powder, baking soda, and sea salt. Mix the dry ingredients together slightly, then mix them into the wet ingredients. Stir in the optional chocolate chips.
Press the brownie batter into the prepared pan. The mixture will be very thick. Drizzle the optional extra almond butter on top of the batter and swirl it around with a toothpick.
The best size pan for these almond butter brownies is a 9×5 loaf pan or similar rectangular pan dimensions.
You can make it in a square 8-inch pan, however, the brownies will be a bit thinner.