PREHEAT oven to 350°F. Line 13x9-inch baking pan with foil, with ends of foil extending over sides of pan. Grease foil. Microwave unsweetened chocolate and butter in large microwaveable bowl on HIGH 2 min. or until butter is melted. Stir until chocolate is completely melted. Stir in sugar. Add eggs and vanilla; mix well. Stir in flour until well blended. Spread into prepared pan.
BAKE 30 to 35 min. or until toothpick inserted in centre comes out with fudgy crumbs. (Do not overbake.) Cool in pan. Spread with jam.
MICROWAVE cream in medium microwavable bowl on HIGH 1 min. or until simmering. Stir in semi-sweet chocolate until chocolate is melted and mixture is well blended. Spread glaze over jam layer. Refrigerate 1 hour or until glaze is set. Lift brownies from pan, using foil handles. Cut into 32 squares.
serving size = 1 brownie