01 -
Preheat the oven to 350°F (175°C). Line a muffin tin with liners.
02 -
Whisk together the sweet potato puree, water or milk, vinegar, vanilla extract, and oil. Let the mixture sit for 10 minutes.
03 -
Sift the flour, sugar, cinnamon, salt, baking powder, and baking soda into a separate bowl. Add ground ginger if desired.
04 -
Combine the dry ingredients with the wet ingredients, stirring gently to form a batter. Avoid overmixing.
05 -
Scoop the batter into the prepared muffin liners, filling each about 2/3 of the way up.
06 -
Bake for 18 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
07 -
Allow the muffins to cool completely. They taste even better the next day, and the liners peel off more easily.