You can place this mixture in either a Kong or a clean, sterilized marrow bone.
Take 1 cup of their regular dry dog food or biscuits.
Grind in a food processor or with a meat tenderizer.
Take the resulting treat bits and add 1/2 cup peanut butter.
Place mixture in a Kong or marrow bone. In the summer you can freeze it for 1/2 hour to get it nice and cool for your pups.
Enjoy!