What's the plural form of marshmallow creme? Here's the word you're looking for.
Answer
The noun marshmallow creme can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be marshmallow creme.
However, in more specific contexts, the plural form can also be marshmallow cremes e.g. in reference to various types of marshmallow cremes
or a collection of marshmallow cremes.