Preheat the oven to 375° and line (2) baking sheets with parchment paper. Set aside.
In a medium bowl, whisk flour, cocoa powder, baking soda and salt together. Set aside.
In a large bowl, beat on medium speed, butter, brown sugar, sugar, vanilla and corn syrup together until creamy.
Beat eggs into the wet mixture.
Gradually add flour and mix well.
Stir in peanut butter chips.
Using a 1-inch cookie scoop, place on prepared baking sheets
Bake for 8-10 minutes.
Remove from the oven and let set for a couple minutes, then remove cookies and place on a wire rack to cool.