Using and electric mixer cream together butter and cream cheese. Add sugar and beat till fluffy.Add egg yolks one at a time till mixed. Add Vanilla,mix flour 1/2cup at a time till gone. Add 2 crushed butterfinger bars mix well, cover and put in frig over night
Pre heat oven to 350 grease one or more cookie sheets.
remove cookie dough from the frig and use a teaspoon and drop onto greased cookie sheet bake 10-12 minutes let cool on wire rack. When completly cool drizzel hot fudge over tops and sprinkle with remaining crushed butterfinger bar.