Categories: Cakes, Desserts 
      Yield: 20 servings 
  
    1/2 c  Butter, softened (1 stick) 
      1 c  Sugar, divided 
    1/4 ts Salt 
      1 c  A.P. flour 
    1/4 c  Cocoa powder 
      2 pk Cream cheese(8oz),softened 
      2    Eggs 
      2 ts Vanilla extract or flavor 
    1/2 c  Chocolate topping 
    1/4 c  Chocolate chips, melted 
  
     Heat oven to 350 F.  Line 8" square baking pan with foil, extending 
  edges over sides of pan.  In a small mixing bowl, beat butter, 1/2 c. 
  sugar 
  and salt until smooth.  Stir together flour and cocoa; gradually add to 
  butter mixture, beating until soft dough is formed.  Press dough onto 
  bottom of prepared pan.  Beat cream cheese and remaining 1./2 c. of sugar 
  until smooth.  Add eggs and vanilla; blend well.  In separate bowl, mix 1 
  cup batter with topping, stirring wntil well blended.  Pour 1 c. of 
  topping-flavored batter over dough.  Stir melted chocolate into remaining 
  flavored batter; set aside.  Gently pour vanilla batter, 1/4 c. at a time, 
  over flavored batter.  Drop tablespoonsful of reserved flavored batter 
  ovver top; gently swirl with knife or spatula for marbled effect.  Bake 35 
  to 40 minutes or until cheesecake is firm and top is slightly puffed.  Cool 
  completely in pan on wire rack; refrigerate.  To serve, lift from pan using 
  foil edges; cut into squares.  Garnish as desired. 
  Yield: about 20 squares