Marcy DeKruyf Recipe Collection
Cornflake Chocolate Chip Marshmallow Cookies

Anne Lyon posted these on Facebook. I googled for recipes.
Here are a few link:

https://www.christinatosi.com/post/cornflake-chocolate

https://www.splendidtable.org/recipes/cornflake-chocolate-chip-marshmallow-cookies

https://www.marthastewart.com/865379/cornflake-chocolate-chip-marshmallow-cookies

Must try!!!