Line a 6” springform pan with parchment paper by lining the base with parchment and tightening the springform on top so that the paper stays in place.
In a large bowl, stir together the rice cereal and melted chocolate. Scoop the mixture into the springform pan, spread it out, then tap the pan on the counter a few times to help level it. Refrigerate for 30 minutes.
Scoop the softened Halo Top over the crunch base and spread it out into an even layer. Freeze for 2+ hours.
Slice into 10 slices and top each slice with an Oreo chopped in half. Enjoy!