cups sugar into chocolate until well blended. Mix in 4 eggs and vanilla. Stir in 1 cup flour and nuts until well blended. Spread in greased baking pan. Beat cream cheese, 1/3 cup sugar, 1 egg and 2 tablespoons flour in same bowl until well blended. Spoon mixture over brownie batter. Swirl with knife to marbleize.
Bake 40 minutes at 325-350 degrees or until a toothpick i