These are the BEST healthy pumpkin muffins out there! They are incredibly easy to put together and they turn out so moist with ONE ENTIRE can of pumpkin in them! The recipe uses all whole wheat flour and using the brown sugar is optional, so you can make them naturally sweetened with only honey. A simple clean muffin made from scratch (and it's up to you to add the yummy oatmeal streusel for an extra treat!) - the perfect fall, Halloween and Thanksgiving holiday treat.