Ingredients:
  1 (18 ounce size) jar of peanut butter
  2 cups Rice Krispies cereal
  1 1/2 cups Confectioners sugar
  1/4 tsp. vanilla extract
  1 cup chocolate, melted

  
Preparation:

  In a double boiler, melt chocolate and set aside.
  In a medium sized bowl, combine all other ingredients.
  Blend well until mixture forms a dough. 
  Pinch off 1-inch pieces and roll into a ball shape. 
  Repeat this step until all of the dough is used.
  Using a toothpick or fork, dip the balls into the chocolate until well coated. 
  Place onto a cookie sheet lined with wax paper.
  Refrigerate for 30 minutes.