The easiest way to dress up your brownies? Add a filling! Cream cheese-based fillings are easy to make and can be adapted to many different flavorings, including pumpkin, mint, oreo, and espresso. Dollop the prepared filling on top of the brownie batter, and use your finger or the back of a wooden spoon to swirl the filling through the dough in large figure 8 movement. The filling will not only taste great, it will create a beautiful pattern over the top of the brownies that will certainly impress.