Step 1

Preheat oven to 350°F. Line 13x9-inch baking pan with foil, with ends of foil extending over sides of pan. Grease foil; set aside. Microwave 4 oz. of the unsweetened chocolate and the butter in large microwaveable bowl on HIGH 2 min. or until butter is melted. Stir until chocolate is completely melted. Add sugar; mix well. Blend in eggs and vanilla. Stir in flour and nuts until well blended. Spread in prepared pan.

Step 2

Bake 30 to 35 min. or until toothpick inserted in center comes out with fudgy crumbs. (Do not overbake.) Cool in pan. Spread 1/4 cup of the jam over brownies.

Step 3

Chop remaining 2 oz. unsweetened chocolate and the 6 oz. semi-sweet chocolate; set aside. Microwave cream in medium microwaveable bowl on HIGH 1 min. or just until cream comes to boil. Add chopped chocolates and the remaining 3 Tbsp. jam; stir until chocolates are completely melted and mixture is well blended. Spread over jam layer on brownies. Refrigerate 1 hour or until chocolate glaze is firm. Lift brownies out of pan onto cutting board, using foil handles. Cut into 32 pieces.