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.

Chex Mix has really outdone itself with its latest innovation, Cinnamon Toast Crunch Muddy Buddies. This marks the first time the brand has partnered with a cereal to bring a new flavor dimension ...