Slutty Cheesecake Bars

that merge in a beautiful, messy way.)
Prepare the brownie batter according to the package instructions.
Dollop the brownie batter over the cheesecake layer.
Using a knife or a skewer, gently swirl the brownie batter into the cheesecake layer to achieve a marbled effect. (Be careful not to overmix; you want distinct layers that merge in a beautiful, messy way.)
Bake and Set:Return the pan to the oven and bake for 35–40 minutes. The bars are done when the edges are set and a toothpick inserted in the center