01 -
Heat the oven to 350°F (175°C). Line a 9-inch square baking pan with parchment paper, leaving overhang on two sides.
02 -
In a mixing bowl, stir the brownie mix, eggs, oil, and milk until smooth and no dry streaks remain. Spread the batter evenly in the prepared pan.
03 -
Arrange the whole Halloween Oreos in a single layer over the brownie batter. Press them in lightly so they sit flat.
04 -
Bake for 25-30 minutes, until the edges are set and a tester in the center comes out with moist crumbs. Cool completely in the pan.
05 -
Scrape the orange creme from 6 Oreos into the vanilla frosting. Add orange gel food coloring and stir until smooth and bright.
06 -
Spread the orange frosting evenly over the cooled brownies. Refrigerate for 30 minutes, until the frosting feels firm enough to touch lightly.
07 -
Spread chocolate frosting over the chilled orange layer. Scatter crushed Oreos over the top, then slice into squares with a warm, wiped knife.