Preheat your oven according to the instructions on the brownie mix box and prepare a 9-inch springform pan by spraying it with cooking oil spray.

In a large mixing bowl, combine the brownie mix with the required ingredients as indicated on the box, and mix well until you have a smooth batter.

Pour the brownie batter into the prepared springform pan.

Place the pan in the oven and bake according to the package instructions. Check for doneness by inserting a toothpick into the center; it should come out clean or with a few moist crumbs.

Once baked, let the brownies cool completely in the pan. Transfer to a cutting board and cut into triangles or your preferred shape.

While the brownies cool, prepare your frosting by adding edible gel food coloring to the white frosting and mixing until desired colors are achieved.

Fill icing bags with the colored frosting and attach the large star frosting tip.

Use the colored frosting to decorate each brownie triangle with festive designs. Sprinkle white pearl sprinkles and edible gold stars on top.

Serve the beautifully decorated Frosted Christmas Brownies on a festive plate and enjoy!