In a large mixing bowl, beat the softened cream cheese and peanut butter with a hand mixer until smooth and creamy.
Mix in the vanilla extract.
Add the powdered sugar and beat until fully combined and smooth.
Place the Butterfinger bars in a zip-top bag and crush them into small pieces with a rolling pin or meat mallet. Reserve some of the crushed Butterfinger pieces for topping.
Fold the remaining crushed Butterfinger pieces into the cream cheese mixture.
Gently fold in the thawed whipped topping until evenly combined. Do not overmix.
Spoon the filling into the graham cracker crust and spread it into an even layer.
Sprinkle the reserved crushed Butterfinger pieces over the top.
Refrigerate for at least 4 hours, or overnight, before slicing and serving.
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Notes
The cook times will vary based on the size of the chicken. Make sure to use a meat thermometer to ensure that the chicken is cooked to the correct temperature.Store any leftover chicken in an airtight container in the refrigerator for up to 4-5 days.