In a large bowl, combine 1 1/4 cups of all-purpose flour, 1/2 cup of finely ground almond flour, 1/2 cup of unsweetened cocoa powder, 2/3 cups of granulated sugar, 1 teaspoon of baking powder, 1/4 teaspoon of baking soda, and 1/2 teaspoon of kosher salt. Whisk the dry ingredients together until fully combined.