Chocolate Swirled Chocolate Chip Cheesecake

Heat oven to 350°F. Beat butter, 1/2 cup sugar and salt in small bowl until smooth. Stir together flour and cocoa; gradually add to butter mixture, beating until soft dough forms. Press dough onto bottom of 8- or 9-inch springform pan.

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 1/2 cup small chocolate chips to remaining batter; pour over crust.

Place remaining chips in medium microwave-safe bowl. Microwave at Medium (50%) 1 minute; stir. Microwave at Medium in 15 second increments until chocolate is melted and smooth when stirred. Gradually add to reserved batter, blending well. Drop by spoonfuls onto batter in pan; gently swirl with knife for marbled effect.

Place remaining chips in medium microwave-safe bowl. Microwave at Medium (50%) 1 minute; stir. Microwave at Medium in 15 second increments until chocolate is melted and smooth when stirred. Gradually add to reserved batter, blending well. Drop by spoonfuls onto batter in pan; gently swirl with knife for marbled effect.