Preheat oven to 375 degrees F.
In a large bowl whisk together flour, salt, and baking powder.
In a separate bowl combine sugar, maple syrup, egg, oil, sweet potatoes, milk and vanilla, mix well.
Combine wet and dry ingredients.
Stir in cinnamon, nutmeg and pecans.
Pour batter into a cupcake pan lined with cupcake liners.
Bake for 15-20 minutes or until a cake tester comes out clean.