[header] How to make marshmallow and oats bars [title] Add 3 tablespoons of butter in a pan and heat it until it completely melts. [title] Add the marshmallows. [step] Make sure to use a bag of them because when they melt, their size will decrease. 
[title] Stir until the marshmallows become a dense liquid. [step] If your marshmallows are white (like they usually are), after it becomes a liquid it will look like dense, thick milk.