Preheat oven to 350 degrees F.
In a large bowl, cream together sugars, butter, shortening and peanut butter until light and fluffy. (note: you can do this by hand, or using a hand mixer)
Add eggs and vanilla to butter mixture and mix well; gradually add flour and baking soda and continue to mix until completely incorporated.
Fold in brownie bits.
Using a cookie scoop (or tablespoon) scoop dough into small balls, roll and dip in granulated sugar.
Placed on ungreased cookie sheet and bake for 11-13 minutes or until golden brown.