In a mixing bowl, cream butter, peanut butter and sugars. Add egg, peanuts and caramel and set aside.

In a separate bowl, mix baking soda and flour. Add flour mixture to wet mixture. Slowly add pieces of Butterfinger.

Drop by rounded tablespoons on nonstick cookie pan or greased cookie pan.

Bake at 375 degrees for 8 to 10 minutes. Remove from oven and let cool on wire rack.