Spray a 9×13 pan with non-stick cooking spray. Chop up 20 Oreos. Place the chopped Oreos in a gallon Ziploc bag and whack with your rolling pin. You want some big pieces and some crumbs.
In a large bowl, measure out your Rice Krispies, add in your Oreo’s, and mix together.
In a medium saucepan on the stove over medium low heat melt the butter and marshmallows. Stirring constantly until all of the marshmallows are melted. Pour the melted marshmallows over your Rice Krispie/Oreo mixture and mix until everything is coated. Press into your prepared pan and let cool.
Recipe by Reality Daydream at https://realitydaydream.com/oreo-rice-krispie-treats/