Put a piece of wax paper at the bottom of an 18x13 baking pan. Set aside.
Place butter in the Instant Pot insert, and turn on the Sauté function. Stir until melted.
Gradually add in marshmallows and stir gently until all have melted.
Turn off the Instant Pot and carefully remove the insert. Add the rice krispie cereal in 2 cup increments, stirring until completely combined with melted marshmallow mixture.
Once the mixture has cooled slightly, add a handful of the chocolate candies and very gently fold them into the top layer only.
Scoop out the top layer, and spread out evenly in the prepared baking pan.
Take another handful of chocolate candies and gently fold into the top layer, then remove and add to the pan. Continue this process until you have mixed-in all of the candies and added the rice krispie cereal mixture to the pan.
Place a piece of wax paper on top and use your hands to smooth down. Allow to set overnight, then remove wax paper and cut into squares.
Notes
It is important to add the chocolate candies into the top few inches of the mixture only; any deeper and they may end up melting.
Make these different holidays or events by using different colors of chocolate candies and sprinkles. Try green and red for Christmas, black and orange for Halloween, and pastel colors for Easter.
Vary the flavor by making these with different candies, flavored marshmallows, chocolate rice krispies cereal, or another favorite cereal.
There are 4 Blue Plan SmartPoints in a serving of this.