Add the peanut butter, butter, brown sugar, and granulated sugar to a large bowl and cream together for about 2 to 3 minutes until the mixture is light and fluffy. 1 cup Peanut Butter, 1 cup Unsalted Butter, 1 cup Brown Sugar, 1 cup Granulated Sugar
Add in the eggs and vanilla extract and mix until just combined. 2 Large Eggs, 1 tsp Vanilla Extract
Add in the flour, baking soda, baking powder, and salt and mix it in until you have a soft cookie dough. 2 1/2 cups All Purpose Flour , 1 1/2 tsp Baking Soda, 1 tsp Baking Powder, 1/2 tsp Salt
Add in the majority of the butterfingers (reserve a few for the tops of the cookies) and fold them into the dough until mixed evenly. 3 cups Chopped Butterfingers,
Cover the cookie dough and place it in the fridge for at least 30 minutes, up to 2 days.
Preheat the oven to 350 degrees Fahrenheit. Line a cookie sheet or two with parchment paper.
Scoop the cookie dough into large balls, about 2 TBS in size (I measured mine all to be 50g). Place them a few inches apart on the cookie sheet.
Bake for 10 to 13 minutes, or until the tops are set and the cookies just start to crack.
Remove the cookies from the oven and press extra Butterfinger pieces into the tops of each cookie.
Let the cookies cool for 5 minutes on the cookie sheet, then transfer to the cooling rack to cool completely.