Brush your container with butter to prevent sticking later on.
Melt the butter in a large pot.
Once melted, add your candy corn and let this melt. You may need to mash it with a spoon or potato masher to break up the candy.
Then add your marshmallows and melt.
Once completely melted, take off heat.
Add and mix in your rice krispies cereal.
Then press down in a container and let cool.
Top with some candy corn for decoration before completely cool.