Ingredients:
1 1/2 cups creamy peanut butter
1/2 cup butter, softened
1 teaspoon vanilla extract
4 cups sifted confectioners' sugar
6 ounces semi-sweet chocolate chips
2 tablespoons shortening

Directions:
Line a baking sheet with waxed paper; set aside.
In a medium bowl, mix peanut butter, butter, vanilla, and confectioners' sugar with hands to form a smooth stiff dough. Shape into balls using 2 teaspoons of dough for each ball. Place on prepared pan, and refrigerate.
Melt shortening and chocolate together in a metal bowl over a pan of lightly simmering water. Stir occasionally until smooth, and remove from heat.
Remove balls from refrigerator. Insert a wooden toothpick into a ball, and dip into melted chocolate. Return to wax paper, chocolate side down, and remove toothpick.
Repeat with remaining balls. Refrigerate for 30 minutes to set.