Step 1

Heat oven to 350ºF.

Step 2

Line 13x9-inch pan with foil; spray with cooking spray. Microwave 4 oz. (1 pkg.) chocolate and butter in large microwaveable bowl on HIGH 2 min. or until butter is melted. Stir until chocolate is completely melted and mixture is well blended. Add sugar; mix well. Blend in eggs, coffee granules and vanilla. Stir in flour and nuts. Spread into prepared pan.

Step 3

Bake 22 to 25 min. or until toothpick inserted in center comes out with fudgy crumbs. Cool on wire rack 30 min. Use foil handles to lift brownie from pan before cutting to serve.

Step 4

Meanwhile, grate 1/2 oz. of the remaining chocolate; set aside. Microwave remaining chocolate and COOL WHIP in microwaveable bowl on HIGH 1 to 1-1/2 min. or until chocolate is completely melted. Whisk mixture until smooth and blended. Let cool 10 min.; spoon over cooled brownies. Sprinkle with shaved chocolate. Refrigerate 30 min. or until glaze is set.