In a medium bowl, whisk together dry ingredients.
2 cups AP flour, 1/2 cup Cocoa powder, 1 tsp Baking soda, 3/4 tsp Salt
In a stand mixer, beat butter and sugar on medium (4) until light and fluffy, about 2-3 minutes.
16 Tbsp Unsalted butter, 1 1/2 cups Brown sugar
Scrape bowl. Add egg and flavor. Beat until combined.
1 Egg, 1 tsp Vanilla extract
Scrape bowl. Add flour and beat until combined.