Mix together first three ingredients (chocolate graham crackers, butter and one Butterfinger). Divide mixture evenly among eight mini pie pans, and press firmly into bottom and sides. Put pie shells into freezer to chill until ready to fill.
Mix together next 7 ingredients (PHILADELPHIA Cream Cheese, vanilla extract, dark brown sugar, granulated white sugar, creamy peanut butter, and Cool Whip and 1 cup Butterfinger candy bar, crushed). Beat on med-low for 30 seconds, then scrape down sides of bowl. Beat on high for 1 minute. Pie filling is now ready.
Evenly divide pie filling into eight mini pie pans. Garnish each pie evenly with the 8 oz ounces Cool Whip extra, crushed Butterfinger, mini semi-sweet chocolate chips or semi-sweet chocolate shaving, and crushed peanuts (all optional). Cover each pie and freeze for at least two hours before serving.
