Directions

• 1. Heat oven to 350°F. Line 8- or 9-inch square baking pan* with foil, extending edges over sides of pan.
• 2. Beat butter, 1/2 cup sugar and salt in small bowl until smooth. Stir together flour and cocoa; gradually add to butter mixture, beating on low speed of mixer until soft dough is formed. Press dough onto bottom of prepared pan.
• 3. Beat cream cheese and remaining 3/4 cup sugar in medium bowl until smooth. Add eggs and vanilla; beat until well blended. Remove 1 cup batter; set aside. Add small chocolate chips to remaining batter; pour over crust.
• 4. Remove wrappers from chocolate pieces. Place 18 chocolate pieces in medium microwave-safe bowl. Microwave at MEDIUM (50%) 1 minute or until melted when stirred; add to reserved batter, stirring until well blended. Drop by spoonfuls onto batter in pan; gently swirl with knife or spatula for marbled effect.
• 5. 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 each square with whipped cream and chocolate pieces, if desired. Cover; refrigerate leftover cheesecake. Makes 16 squares or 12 wedges.
• * 8 or 9-inch springform pan can also be used.