Recipe for Chex Mix Puppy Chow Bars General Mills, the owner of Chex cereal, claims to have developed the official “Muddy Buddies” recipe in 2002 and started selling it pre-packaged in 2010.

You may need to refrigerate or freeze the puppy chow chex mix for 10-15 minutes to help ... Then dig in and enjoy your Christmas muddy buddies! The key is using hard peppermints and crushing ...