In a bowl, add all the dry ingredients: flour, baking soda, baking powder, sugar, pumpkin spice and salt. Mix with a spatula.
Add the remaining ingredients: pumpkin puree, milk, egg, sunflower oil, and vanilla extract. Use the spatula to make the batter even, it doesn't matter if there are small lumps.
Pour the batter into the muffin pan, I used silicone molds and they came out very easily. If you like, you can decorate each muffin with a pecan. It is also delicious to sprinkle chopped pecans through the batter. Place the muffins in a muffin pan and slide the pan into the oven.
Bake the muffins at 200˚C (400˚F) (conventional oven) for about 18 minutes or until done.
Let them cool briefly before removing them from the muffin pan.
How to store
You can keep them for 4-5 days or freeze them for 3 months.