Preheat oven to 375°F (190°C). Line a muffin tin with paper liners.
In a large bowl, whisk together flour, baking soda, cinnamon, nutmeg, and salt.
In a separate bowl, whisk together pumpkin puree, sugar, oil, and eggs.
Add the wet ingredients to the dry ingredients and stir until just combined. Do not overmix.
Fill each muffin liner about 2/3 full.
Bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
Let cool in the muffin tin for a few minutes before transferring to a wire rack to cool completely.
Notes
These muffins are best served fresh but can be stored in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week.