01 - Preheat oven to 350°F. Lightly grease a 24-cup mini muffin tin or line with mini paper liners.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, salt, and cinnamon until well combined.
03 - In a separate large bowl, whisk together maple syrup, milk, melted butter, egg, and vanilla extract until smooth and incorporated.
04 - Gradually fold the dry ingredients into the wet ingredients until just combined. Do not overmix to maintain tender texture.
05 - Gently fold in optional add-ins such as chopped nuts or mini chocolate chips if desired.
06 - Spoon the batter evenly into the prepared mini muffin cups, filling each about 3/4 full to allow for rising.
07 - Bake for 13–15 minutes, or until a toothpick inserted into the center comes out clean and tops are lightly golden.
08 - Cool in the pan for 5 minutes, then transfer to a wire rack to cool completely. Serve warm or at room temperature.