1 c  Peanut butter

      4 oz Plus 2 tb butter,

           Cut into tablespoons
  3 1/2 oz Marshmallow creme

      2 ts Vanilla extract

      2 c  Granulated sugar

      5 oz Evaporated milk

      2 tb Powdered sugar

     12 oz Semisweet chocolate chips

  Wait until you taste this--it's fabulous, easy, and makes a wonderful gift.
  1. In a small glass bowl, combine peanut butter and 2 tablespoons butter.

  Heat in a microwave oven on High 30 to 60 seconds, stirring once, until
  butter is melted and peanut butter is soft. Stir in powdered sugar until
  well blended; set aside.
  2. In a large bowl, combine chocolate chips, remaining 1 stick butter,

  marshmallow creme, and vanilla; set aside.
  3. In a large saucepan, combine granulated sugar and evaporated milk. Heat

  over low heat, stirring constantly, until mixture comes to a boil. Boil 6
  minutes, stirring constantly. Pour over chocolate mixture in bowl and stir
  briskly until chocolate and butter melt and mixture is well blended.
  4. Turn half of chocolate mixture into a well-buttered 8-inch square pan.

  Carefully spoon reserved peanut butter mixture over chocolate layer,
  spreading evenly. Carefully place remaining chocolate mixture over peanut
  butter mixture and spread evenly. Refrigerate until set. Cut into 25
  squares.
  Source: 365 Great Chocolate Desserts By Natalie Haughton