Step 1

Roughly chop peanut butter snickers into pieces. Place in a small bowl and stick in the freezer while you prepare the dough.

Step 2

Preheat oven to 325°F (163°C). With an electric or stand mixer fitted with a paddle attachment, cream together the butter and sugars on medium speed. Add the egg, egg yolk, and vanilla and mix well. Gradually add the flour mixture and stir until a dough forms. Fold in frozen peanut butter snickers pieces.

Step 3

Chill dough for at least 30 minutes in the refrigerator.

Step 4

Scoop 1.5 Tablespoons of dough and drop onto ungreased baking sheet or silicone baking mat.

Step 5

Bake for 10 minutes or until edges are slightly browned. The centers will look soft. Allow to cool for 5 minutes on the baking sheet before transferring to a wire rack to cool completely.