Add the pumpkin puree, peanut butter, and eggs to a large mixing bowl and mix until fully combined.
Add in 1 cup of flour and mix until combined. Add in another cup of the flour and mix until a doughy mixture forms.
Knead the dough by hand and add the remaining flour as needed, until the dough reaches a soft, but not sticky or crumbly consistency.
Lay out a large piece of parchment paper and sprinkle lightly with flour before dumping the dough onto the prepared surface.
Roll out with a rolling pin to about ¼-inch thickness.
Cut out as many cookies as you can with your cookie cutter (I used the bone shape) and set aside on a cookie sheet or similar dish.
Line the bottom of your air fryer with parchment paper and place as many treats as you can, in the bottom, without them touching. I was able to fit 6-7 at a time in my particular air fryer.
Cook on 370° F for 4-5 Minutes or until just lightly browned on the top. Remove and let cool before feeding to your dog.
Repeat until all treats are done. Store in an airtight container away from moisture and heat.