Halloween Cheesecake Brownies

1 pkg. (21-1/2 oz.) brownie mix
1 pkg. cream cheese, softened
1/3 cup sugar
1/2 tsp. vanilla
1 egg
16 drops yellow food coloring
8 drops red food coloring

Preheat oven to 350°F. Prepare brownie batter as directed on package; spread into greased 13x9-inch baking pan.

Beat cream cheese, sugar, and vanilla in medium bowl with electric mixer until well blended. Add egg and food colorings; mix just until blended. Pour over brownie batter; cut through batter with knife several times for marble effect.

Bake 35 to 40 minutes; cool in pan on wire rack and cut.