These marble cheesecake brownies are a decadent and indulgent dessert that's perfect for chocolate and cheesecake lovers. The brownie batter is made with cocoa powder and melted chocolate, while the cheesecake batter is made with cream cheese, sugar, and vanilla. The two batters are swirled together to create a beautiful marble effect. These brownies are perfect for parties, potlucks, or any time you want a delicious and impressive dessert.