Preheat oven to 350°F (175°C).

In a large bowl, mix pumpkin puree and peanut butter until smooth.

Gradually add oats and flour to form a dough.

Roll dough on a floured surface to 1/4-inch thickness.

Cut into shapes with cookie cutters and place on a parchment-lined baking sheet.

Bake for 20 minutes or until golden brown.

Cool completely before serving.