World's Best Peanut Butter Ball Ingredients: Crunchy Peanut Butter, Butter, Vanilla, Powdered Sugar, Rice Crispies, Chcolate Almond Bark, Ghirardelli Chips or Meltable Wafers Mix peanut butter, vanilla, and butter Slowly, add powdered sugar. Switch to your hands when the mixture gets too powdery for the mixer. Mix in by hand the crushed rice crispies. Roll the mixture into balls. Melt chocolate in the microwave, checking it every 20 seconds. Coat the balls in chocolate. Gently, place on a cookie sheet and swirl the top with chocolate. Refrigerate for one to two hours, until solid.