1-Step 1: Prep the pan and oven First, preheat your oven according to the brownie mix box directions. Most brownie mixes bake well around 350°F, but always follow the package instructions for best results. Lightly grease an 8×8-inch or 9×9-inch baking pan, or line it with parchment paper for easy lifting later.

2-Step 2: Mix the brownie batter Second, combine the 18.3 ounce box fudgy brownie mix, 2 large eggs, 2/3 cup vegetable oil, and 3 tablespoons water in a large bowl. Stir until the batter looks smooth and thick. Try not to overmix, since that can make brownies tougher instead of soft and fudgy.

3-Step 3: Bake the brownies Third, spread the batter evenly in the prepared pan. Smooth the top with a spatula so the brownies bake evenly. Bake for the time listed on the box, usually around 20 to 30 minutes depending on pan size and oven strength. The brownies are ready when a toothpick comes out with a few moist crumbs, not wet batter.

4-Step 4: Cool fully before frosting Fourth, place the pan on a wire rack and let the brownies cool completely. This step matters because warm brownies can melt the frosting. If you want clean slices, give them at least 45 to 60 minutes to cool, or chill them briefly in the fridge after they reach room temperature.

5-Step 5: Make the cream cheese frosting Fifth, beat together the 8 ounces cream cheese, softened, 1/2 cup powdered sugar, and 1 teaspoon vanilla in a medium bowl. Mix until smooth and fluffy. If the frosting feels too thick, let it sit for a few minutes at room temperature and stir again. The texture should be spreadable but not runny.

6-Step 6: Frost and garnish Sixth, spread the frosting over the cooled brownies in an even layer. Use an offset spatula or the back of a spoon for a pretty finish. Sprinkle 1 to 2 teaspoons festive sprinkles on top right away so they stick well.

7-Step 7: Slice and serve Finally, cut the brownies into neat squares. For the cleanest edges, wipe your knife between cuts. Serve at room temperature for the softest texture, or chill briefly if you want a firmer bite. These brownies taste great on their own, but they also pair well with fresh berries, milk, or coffee.