Mix flour, oatmeal, baking soda, cinnamon, and salt in a bowl and then set aside
Cream butter with electric mixer
Add in both sugars, egg, and vanilla to the creamed butter
Mix flour mixture into the butter mixture
Add in pumpkin
Drop 1/4 cup of batter onto greased cookie sheet. Move the batter around to create a pumpkin shape.
Bake at 350 for 20-25 minutes
Decorate cookies to look like jack-o'-lanterns once cooled