Lightly grease a slice pan with butter or baking paper. Set aside.

In a bowl combine Rice Bubbles, Sprinkles and 1 cup of chopped Marshmallows.

Melt remaining Marshmallows and Butter in separate pots then mix the two together then pour into the Rice bubble mixture and combine.

Pour combined mix into the slice pan and presh flat with the back of a spoon. Cool for 5mins before slicing into bars then refrigerate to set.