Preheat your oven to 350°F (175°C).

In a medium bowl, whisk together the all-purpose flour, cocoa powder, baking soda, and salt.

Using a stand mixer, beat the white sugar, softened butter, and peanut butter on medium speed until smooth and creamy.

Gradually add the dry flour mixture to the wet ingredients, mixing on low speed until just combined.

Drop rounded tablespoons of dough onto a parchment paper-lined baking sheet, leaving space between each dollop. Gently flatten with a fork.

Bake for 10-11 minutes until edges are set but center remains slightly soft.

Transfer the cookies to a cooling rack and allow them to cool for a few minutes.