Preheat the oven to 350F, and line a 9x5 loaf pan with parchment with some overhanging to make for easy lifting later.

Brown the butter by heating butter in a small pot over medium low heat. Stir gently as it cooks. It will turn amber colored, and once it is this color remove it from the heat. Do not let it burn.

To the pot of browned butter, add in your chocolate chips- (half a cup), stir to melt and incorporate. Next add in the cocoa powder and stir until you get a smooth mixture.

Make Faux buttermilk- In a 1 cup measuring cup heat your milk in the microwave until it is warm (about 100°.) Stir in the vinegar to make your faux buttermilk. Set aside.

In a medium mixing bowl, stir together the faux buttermilk, sugar, brown sugar, and vanilla. Mix until the sugar is dissolved. Add the browned butter-melted chocolate mixture to the mixing bowl, mixing well until combined.

Carefully stir in the flour and salt.

Lastly, gently fold in extra chocolate chips. (Optional but highly encouraged.)

Pour batter into prepared baking pan and bake for 30-40 minutes. Baking time will vary based on how well done you prefer your brownies. Gooey brownies will be slightly wet still when poked with toothpick. A well done brownie will be dry once a toothpick is inserted. The choice is yours!

Once brownies are removed from oven, allow to cool for 10 minutes or so in the baking pan, then grab the parchment and pull brownies out of the loaf pan. Allow to cool further or serve warm. Just note that gooey brownies will be difficult to cut if still warm!