Use the Right Pan.To make these I used a 9×13 inch pan, but if you like your treats taller I recommend using a 9 or 8 inch square pan.
Use Fresh Marshmallows.Old marshmallows that are dried out don’t melt well, so make sure to use fresh ones that won’t melt into a large blobb!
Keep Stirring.When melting marshmallows with butter, make sure that the saucepan is on low-medium heat (not high!), and do not leave the stove, keep stirring until the mixture is fully melted and smooth.
Work Quickly.It is very important that you work quickly as the marshmallow mixture will set very quickly, and will be difficult to work with once it sets.
When pressing the cereal mixture into the pan, LIGHTLY press it into the pan.Pressing too hard will result in very hard treats.
Storing: Store at room temperature for up to 5 days. If you want them to last longer, store them in the fridge for up to 10 days. These bars can also be frozen. Wrap them tightly in plastic wrap, place in Ziploc bags and freeze for up to a month.