Preheat your oven to 400 degrees F. Line a muffin tin with paper liners.
In a large mixing bowl whisk together the flour, baking soda, baking powder, salt, cinnamon, nutmeg, and pumpkin pie spice.
In a medium mixing bowl whisk together the eggs, light brown sugar, sugar, milk, pumpkin puree, vegetable oil, and vanilla extract.
Slowly add the wet ingredients to the dry ingredients. Mix just until combined.
Using a muffin scoop add the batter to your lined muffin tin.
Sprinkle cinnamon sugar on top of the muffin batter before baking. This is optional but I love the crispy and sweet topping.
Bake the muffins at 400 degrees F for around 5 minutes and then turn down your oven to 350 degrees F. Bake for an additional 12-15 minutes or until a toothpick inserted in the middle of the muffin comes out clean.