Cream Cheese Swirl Brownies

1 (22.5 oz.) pkg. Betty Crocker fudge brownie mix
1 (3 oz.) pkg. cream cheese, softened
2 tbsp. butter, softened
1/4 c. sugar
1 tbsp. flour
1/2 tsp. vanilla
1 egg

Heat oven to 350 degrees. Grease oblong pan, 13 x 9 x 2 inches. Prepare fudgy brownies as directed on package except - spread 2/3 of the dough in pan. Beat cream cheese and butter in small mixer bowl on medium speed until fluffy; beat in sugar gradually. Beat in remaining ingredients until smooth. Spread over dough in pan. Drop remaining dough by tablespoonfuls onto cream cheese mixture; swirl lightly with spatula for marbled effect. Bake 35-40 minutes; cool. Cut into 1 1/2 inch squares.