1. In a small bowl, cream peanut butter, butter, and vanilla. Gradually add powdered sugar and mix until smooth. Shape into 1-inch balls. Cover and refrigerate for at least 30 minutes.2. In a microwave-safe bowl, melt chocolate chips and shortening, and stir until smooth.3. Dip peanut butter balls into the chocolate mixture and place on parchment paper.4. Place M & M’s, flat side up, on top of each ball. Let set until firm.5. Use red gel to create red veins on the eyes.