Preheat oven to 350 degrees.
In a bowl, combine flour, baking soda, pumpkin pie spice, and salt.
In a mixing bowl, beat the eggs and sugar; add the pumpkin and oil and mix well.
Stir into the dry ingredients just until moistened. Fold in the cranberries.
Fill foil-or paper-lined muffin cups almost to the top. Bake at 350 degrees for 18-22 minutes or until a toothpick comes out clean. Cool for 5 minutes before removing from pans to wire rack