This is my go to recipe, although I sometimes use sweet potato instead of pumpkin:
Pumpkin Cream Cheese Muffins - AllrecipesA friend gave me a Pumpkin Spice Muffin recipe recently that is on my list to try:
One box of spice cake mix
One can of pumpkin (15oz)
One bag of Hershey Cinnamon Chips (add all or some depending on your preference). I typically add about of the bag.
Mix the can of pumpkin with the spice cake mix it is easier if you use a hand mixer. I add one tablespoon of oil
or water which seems to help since it will be thick
Then add the cinnamon chips I recommend folding them in rather than use the mixer
Scoop into muffin liners and bake according to the directions on the spice cake mix box
Small muffins about 18ish minutes; large muffins about 22-25 minutes. The toothpick test works.