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1 cup unsalted butter
1 large egg
1 cup Butterfinger bar, broken into pieces
Contents of jar or tin
Heat oven to 350 degrees F.
Beat butter until smooth with electric mixer. Add egg, and beat until combined. Add Butterfinger pieces, contents of the jar or tin, and blend on low. Form cookies into 1 1/2-inch balls and place 2 inches apart on an ungreased cookie sheet. Bake for 10 to 12 minutes until edges are golden. Remove from oven; let rest 2 minutes, then transfer to a wire rack to cool.
Makes 3 dozen cookies.