01 - In a large bowl, combine the creamy peanut butter, softened unsalted butter, vanilla extract, and salt. Beat with a hand or stand mixer until the mixture is completely smooth and creamy.
02 - Gradually add the powdered sugar, one cup at a time, mixing thoroughly after each addition. Continue until the dough becomes stiff enough to handle and no longer feels sticky to the touch.
03 - Scoop tablespoon-sized portions of the dough and roll them between your palms to form smooth, uniform balls. Arrange each ball on a parchment-lined baking sheet, leaving slight space between them.
04 - Transfer the baking sheet to the refrigerator and chill the peanut butter balls for 30 minutes until they are firm enough to handle during the dipping process.
05 - Place the semisweet chocolate chips and shortening (or coconut oil) in a microwave-safe bowl. Heat in 30-second intervals, stirring between each burst, until the chocolate is completely melted and smooth.
06 - Insert a toothpick into each chilled peanut butter ball and dip it into the melted chocolate, leaving the top third exposed to create the signature buckeye appearance. Gently tap and allow excess chocolate to drip back into the bowl.
07 - Return each dipped cookie to the parchment-lined baking sheet. Once all cookies are coated, refrigerate for 15 to 20 minutes until the chocolate shell is fully set. Remove toothpicks and gently smooth over any holes if desired.