These cookies and cream rice krispie treats have only five ingredients, and taste amazing. They're so easy to make, and perfect for cooking with the kids!
Spray a 9 x 13 pan with cooking spray or line with parchment paper, and set aside.
In a large pot, melt the butter over medium heat. Add the mini marshmallows and cook, stirring frequently, until melted. Stir in the white chocolate chips until melted completely.
Remove from heat and stir in the rice krispies cereal and Oreo cookies. Pour the mixture into the prepared pan and press into an even layer. Cool to room temperature before serving.