Take a large pot on medium high heat add the butter and marshmallows. Stir until all the marshmallows are melted about 3-5 minutes.
Pour the 6 cups of cereal into the melted marshmallow and stir. You will need to use a little muscle to make sure all the cereal is coated.
On a sprayed baking sheet pour the cereal mixture and flatten evenly. Let it cool completely before cutting.
While the cereal is cooling lets melt the candies. Take a small pot and heat some water to a simmer. Take a glass bowl filled with the candy melts and set it on top of the simmering water. Stir until the candies are completely melted and smooth about 5-7 minutes. To thin the melted candies for dipping add about a ½ teaspoon of vegetable shortening at a time until you have the consistency you want. (See note) Once the candy is completely melted set aside until you are ready to decorate.
It’s time to cut the treats into any shape you want. We did squares, rectangles, and circles. Take a treat decorate it making them look like monsters or eye balls. This is the fun part for kids to be very creative. We took a treat and dipped it into one of the colored melted candies then added a large eye to create a one eyed monster. Once all treats are decorated let them rest on a cooling rack for about 2 minutes to allow the candy to set. It’s time to eat. Enjoy!