Before I do anything else, I line a baking sheet with parchment paper or wax paper. This step takes seconds but saves me from cookies sticking later. Having it ready means I'm not scrambling once the warm mixture is ready to shape.
Add the pumpkin puree, coconut oil (or butter), brown sugar, and peanut butter to a small saucepan over medium-high heat. I bring it to a gentle simmer, stirring often so nothing clumps or sticks to the bottom. Once it's smooth, I pull it off the heat and let it cool slightly.
While the pumpkin mixture cools, I add the rolled oats, salt, pumpkin spice, and vanilla extract to a medium bowl. I like to give it a quick stir so the spices are evenly distributed before the wet mixture goes in. This little step keeps every cookie tasting consistent.
Once the pumpkin mixture has cooled a bit, I pour it into the bowl with the oats and spices. I stir until every oat is coated and there's no dry mixture left at the bottom of the bowl. The texture should look thick, sticky, and scoopable.
I use a spoon or small cookie scoop to portion the mixture, then press each scoop gently between my palms to form a cookie shape. I flatten them slightly since they won't spread on their own the way baked cookies do. I place each one on my prepared baking sheet.
I let the cookies sit at room temperature for about 15-20 minutes, or pop them in the fridge for 10 minutes if I'm impatient. Once they've firmed up, they hold together beautifully and are ready to enjoy right away.