Beat the cream cheese, sugar, vanilla, and egg until smooth and fluffy.
Make the brownie batter with the eggs, sugar, butter, cocoa powder, salt, flour, and chocolate chips.
Alternate dropping dollops of the brownie and cheesecake batter into an 8x8 baking pan.
Use a toothpick to swirl both batters together. Bake at 350 for 26 minutes then enjoy!