Use a little of the melted coconut oil or butter to grease the inside of the crock pot.
Then add all ingredients and stir to combine. If you want a really even, creamy texture you can whip it all up in a blender or use a stick blender right in the crock pot first. I just used a lot of elbow grease until the pumpkin lumps were smoothed out.
Cover crock pot and cook on low for 6-8 hours. Pudding will get a crust on top and start to brown on edges (as shown below), but still be pudding-like underneath.