[header] How to make marshmallow cereal bars [title] Melt a bag of marshmallows in a bowl in the microwave for 30 seconds. [step] Mini marshmallows work best as they melt faster, but any kind is good. [title] Mix. 
[step] Keep cooking in the microwave for 10 seconds and mixing until the marshmallows form a smooth, pasty goo. [title] In the same bowl, pour in 1 cup of cereal.