Preheat the oven according to the brownie mix package instructions.
In a mixing bowl, combine brownie mix, eggs, oil, and milk until smooth.
2. Assemble the Layers
Pour half of the brownie batter into a greased baking pan.
Arrange a layer of orange-filled Oreo cookies over the batter.
Pour the remaining brownie batter on top, spreading evenly.
3. Bake
Bake according to the brownie mix package instructions or until a toothpick inserted in the center comes out clean.
Allow the brownies to cool completely before frosting.
4. Frosting and Decoration
Divide the milk chocolate frosting and white/vanilla frosting into separate bowls.
Add a few drops of orange food coloring to the white frosting and mix until evenly colored.
Spread the milk chocolate frosting over the cooled brownies.
Drizzle or pipe the orange-colored frosting on top for a festive Halloween look.
Serving and Storage Tips
