As that mellows out, you can grab a small bowl for mixing. In it, you can whisk together your baking powder and flour.
Following that, you’ll want to grab a larger bowl, again for mixing purposes. In this one, you’ll want to whisk together your sugar, eggs, salt, and vanilla extract. Keep that whisking going until you develop a light, fluffy mixture.
When you hit that desired consistency, you can then add your chocolate mixture to the large bowl, and blend those elements in with one another to the best of your ability. After that, repeat that same process with your dry flour components. And, again, keep that stirring and whisking going until everything is adequately blended and mixed in with one another.
When you’re happy with how everything is looking, simply transfer that batter into your previously-greased pan, and toss that bad boy in the oven to bake for about 20-25 minutes.
You’ll know it’s ready to go when you see the edges of the batter separate themselves from the pan. Also, when you spot the top of the mixture starting to take on a shiny, even complexion, you can remove the brownies from the oven.
Place them on the counter to cool for about another 20 minutes or so.
When they mellow out a touch, simply grab a knife, and cut these brownies into 12 similarly-sized pieces to ensure even dosing throughout, and, boom, that’s it.