Preheat oven to 375 degrees Fahrenheit.
Combine pumpkin, oil, water and cinnamon in a bowl.
Stir in oatd and flour to form a dough. If dough is too wet and sticky, add more flour, if it is dry and crumbly add water in 1/2 tsp increments until dough comes together and does not stick to your hands.
Roll dough to about 1/4″ thickness and cut with your choice cookie cutter.
Bake on ungreased non stick or slightly greased (vegetable oil) uncoated cookie sheet for 20-35 minutes.