Preheat oven to 180oC and line a baking tray with baking paper.
Place pumpkin in a medium mixing bowl and mash with a potato masher or fork.
Add peanut butter, honey or maple syrup and vanilla. Mix throughly.
Combine the oats, until well coated.
Then stir through the chocolate chips.
Roll mixture into balls, golf-ball sized, with damp hands to minimise sticking.
Place balls onto baking tray and press lightly with a fork.
Bake for 12-15 minutes, until golden brown.
Cool on tray before enjoying.