The muffins turned out well, and the fresh pumpkin I cooked and pureed made enough for another 4 batches after this one.
You can find the recipe here if you are so inclined.
(A warning to non-south beachers - they may not taste as sweet as more conventional muffins)
Edited to add: Christina asked me what the difference woul be between pumpkin pie filling and pureed pumpkin. So far as I know you want the stuff that is just pumpkin - no added ingredients. I think that the pie filling may contain added sugar or sweetners.