Place pumpkin puree, peanut butter, and egg in a large bowl and combine well.

Add the oat flour and combine until a dough forms.

Roll the dough out on a floured surface or parchment paper to 1/4" - 1/2" thickness.

Cut out shapes with your favorite cookie cutter. Gather scraps, re-roll and cut until all the dough is used.

Place as many cutouts that will fit in a single layer in the air fryer basket and air fry at 370°F for 6-7 minutes.

Remove the treats from the air fryer basket and place them on a wire rack to cool completely.

Store the treats in an airtight container at room temperature or in the refrigerator.