Preheat your oven to 350 degrees F (176 C) and line a baking sheet with parchment paper.
To a medium bowl add peanut butter and pumpkin purée. Mix well to thoroughly combine. Next, add oat flour and stir using a wooden spoon or spatula. You may need to knead with your hands as the mixture gets thicker. Form the dough into a rough disk. It should look and feel just like playdoh at this point.
Dust your work surface with oat flour and place your dough in the center of the flour. Dust the top of your disk with more oat flour. Using a rolling pin, roll the dough out so it's 1/4-1/2 inch thick.
Use a 1-inch (or similar size) cookie cutter (we like these!) to cut out as many dog treats as you can. Place them on the baking sheet about 1 inch apart. They won’t spread, so you don't have to worry about placing them too close together. Re-roll the leftover dough and cut out any extra treats from the scraps that are left behind. As the recipe is written, you should have about 30 dog treats.
Bake on the center rack for 30-35 minutes until they are dry to the touch. Let cool on pan for 5 minutes before transferring onto a cooling rack and cooling completely before sharing with your furry friends!
Store in an airtight container at room temperature for up to 1 week, or in the freezer for up to 1 month.