01 -
Preheat oven to 175°C (350°F) and line a 23x23 cm (9x9 inch) baking pan with parchment paper.
02 -
In a mixing bowl, combine brownie mix, eggs, oil, and milk. Blend until smooth and free of lumps.
03 -
Pour the brownie mixture into the prepared pan and arrange Oreo cookies on top, pressing them gently into the batter. Bake for 25-30 minutes until a toothpick inserted into the center comes out clean.
04 -
Allow the brownies to cool completely on a wire rack before applying any frosting.
05 -
While brownies cool, prepare the orange frosting by mixing vanilla frosting with the orange cream centers from 10 Oreo cookies and 1 teaspoon of orange food coloring gel until uniform in color.
06 -
Spread the orange frosting evenly over the cooled brownies, creating a smooth surface. Refrigerate for 30 minutes to set.
07 -
After the orange layer has set, spread milk chocolate frosting on top and sprinkle with crumbled Oreo cookies for a decorative finish.
08 -
Cut into 6 rectangular portions and serve chilled for best texture and flavor.