Lay out a sheet of parchment paper on the counter.
Melt butter in a large pot over medium heat. Add mini marshmallows and mix until melted.
Pour in OREO O’s® cereal and mix together until combined.
With a spatula, lightly press the treat mixture onto your parchment paper.
Top with Candy Corn and drizzle white and orange frosting over the mixture.
Let treats cool about 15 min.
Enjoy your tasty treat!