Marbled Chocolate Peanut Butter Treats

8-1/2 HONEY MAID Honey Grahams, broken in half (17 squares)
6 squares BAKER'S Semi-Sweet Baking Chocolate
1/2 cup creamy peanut butter
3 squares BAKER'S Premium White Baking Chocolate



LINE 13x9-inch pan with foil, with ends of foil extending over sides of pan. Arrange grahams on bottom of pan, cutting as needed to completely cover bottom of pan; set aside.
MICROWAVE semi-sweet chocolate and peanut butter in medium microwaveable bowl on HIGH 1-1/2 to 2 min. or until chocolate is completely melted when stirred, stirring every 30 sec. Stir until well blended. Pour over grahams; spread with spatula to cover completely.
REPEAT microwave melting steps with the white chocolate. Drop spoonfuls of the white chocolate over chocolate-covered grahams. Immediately cut through the chocolate mixtures with knife several times for tiger-stripe effect.
REFRIGERATE at least 1 hour or until firm. Use foil handles to remove dessert from pan. Peel off foil. Cut dessert into bars. Store in tightly covered container in refrigerator.