1. Preheat the oven to 350 degrees. Line a baking sheet with parchment paper.
2. Spread flour out evenly on the parchment paper and bake for 5 minutes.
3. In the bowl of your stand mixer, add the butter and brown sugar and beat on medium speed until combined and creamy. Add the peanut butter, cocoa powder, vanilla and salt and mix until combined.
4. Slowly add in the cooked flour, mixing until combined then add in the peanut butter chips.