Take this list with you to any of our 8 supermarkets:
In a saucepan, melt the butter and then add the marshmallows, and stir constantly until the marshmallows have melted.
Remove from heat and stir in the cereal, until coated with the marshmallow cream.
Lay the mixture onto an oven tray that has been foiled and sprayed. Refrigerate until set, about 30 minutes. Cut into squares and serve.