Preheat oven to 350˚. Grease 9x9-inch cake pan or pie pan (pie pan works for thicker brownies).
Mix brownie ingredients in large bowl. In separate bowl, blend cream cheese, egg, and granulated sugar with mixer.
Pour brownie batter into pan and spread until even.
Using a tablespoon, place dollops of the cheesecake mixture throughout pan. Make sure to use all the cheesecake mixture.
Run a toothpick through the cheesecake and brownie batters to create marble design and spread the cheesecake out.
Bake 15 to 20 minutes or until toothpick or fork comes out clean.