Preheat oven to 350 degrees. Line a baking sheet with parchment paper (this is a must, BUTTERFINGER®can be sticky!).
Place BUTTERFINGER® Fun Size Candy bars into an airtight plastic bag and using a mallet, crush into a coarse mixture.
In the bowl of your stand mixer fitted with a paddle attachment or large mixing bowl, cream together unsalted butter and sugar until light and fluffy.
Blend in egg and vanilla.
In another medium bowl, sift together flour through salt. Add half of the flour mixture, blend well and add the remainder. The dough will be thick and dry. Finally, blend in BUTTERFINGER® Fun Size candy bars.
Place heaping tablespoons of Chewy BUTTERFINGER® Sugar Cookie dough 2 inches apart on the baking sheet. Using the palm of your hand, flatten to approximately 1/2-1/4 inch thick.
Bake for 11-12 minutes. Cookies will look semi-cooked but are complete. If you bake them too long, they won't be chewy.
If you've tried this recipe, come back and let us know how they were!