1 c  HERSHEY'S  Semi-Sweet

           -Chocolate Chips, divided
    1/4 c  Butter or margarine,

           -softened
    1/4 c  Shortening

    1/2 c  Sugar

      1    Egg, separated

    1/2 t  Vanilla extract

      1 c  All-purpose flour

    1/4 t  Salt

      1 c  Finely chopped nuts

  Heat oven to 350'F. In small microwave-safe bowl, place 1/4 cup chocolate
  chips. Microwave at HIGH (100%) 20-30 seconds or just until chocolate is
  melted and smooth when stirred; set aside to cool slightly. In large mixer
  bowl, combine butter, shortening, sugar, reserved melted chocolate, egg
  yolk and vanilla; blend well. Stir in flour and salt. Roll dough into 1"
  balls. With fork, slightly beat egg white. Dip each ball into egg white,
  roll in chopped nuts. Place balls on ungreased cookie sheet, about 1"
  apart. Press center of each ball with thumb to make indentation. Bake 10-12
  minutes or until set. Remove from oven; immediately place several of
  remaining 3/4 cup chocolate chips in center of each cookie. Carefully
  remove from cookie sheet to wire rack. After several minutes, swirl melted
  chocolate in each thumbprint. Cool completely.
  Makes about 2 1/2 dozen cookies.