In a separate bowl, combine the peanut butter and hot water. Mix until smooth. Gradually add the dry mixture and mix well. Add a little more water if the dough is too dry, or flour if it's too wet.
Turn dough out onto your work surface and roll to ¼" thickness.
Cut with a cookie cutter and place on a cookie sheet.
Bake for 20 minutes, or until lightly brown. Let cool, then store in an airtight container.
Recipe by Grain Mill Wagon at https://www.grainmillwagon.com/whole-wheat-peanut-butter-dog-treats/