Place butter in a pot on low heat on the stove and allow butter to melt.

Once butter melted, stir in marshmallows until they are melted and combined with the butter.

Remove from heat and stir in riced cereal.

Once all ingredients are combined, scoop into a 9 x 13 buttered pan.

Allow to cool.

Once cooled, you can use a knife to cut squares or a cookie cutter if you prefer shapes.