I know this isn't the CIY (cook it yourself) chatroom, but I have an old recipe for the moistest muffuns you'll ever eat.
If you can boil water, you can make these. They're that simple.
There are only two ingredients.
1 15oz. can Libby's pumpkin mix
1 cake mix - any flavor (spice cake, chocolate, yellow, etc.)
Mix the two ingredients together in a bowl (no need to use a mixer) until the batter is evenly moist. It will be almost the consistency of peanut butter. Bake at 350* for 30 min. It makes exactly 12 muffins. The dough does not rise as it bakes, so don't be afraid to fill the paper muffin cups almost to the top.