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 again.
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 dog treats as you can with your cookie cutter (I used a bone shape), and set aside on a cookie sheet.
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 air fryer.
Cook on 370 degrees for 4-5 Minutes or until just lightly browned on the top. Remove, and let cool for a few minutes before feeding to your pooch!
Repeat until all treats are done. Store in an airtight container away from moisture and heat.