This Oreo cheesecake brownie recipe is a decadent and indulgent dessert that is perfect for special occasions. It is made with a rich chocolate brownie batter, a creamy cheesecake filling, and chunks of Oreo cookies. To make the brownies, you will need all-purpose flour, sugar, cocoa powder, baking powder, salt, butter, eggs, vanilla extract, and Oreo cookies. Mix the dry ingredients together, then add the wet ingredients and mix until smooth. Fold in the crushed Oreo cookies and pour half of the batter into a greased baking dish. Mix cream cheese, sugar, vanilla extract, and an egg until smooth, then pour the mixture over the brownie batter. Pour the remaining brownie batter over the cheesecake layer and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean. Let the brownies cool before serving.