In a large bowl, combine flour, baking powder, baking soda, salt, and cinnamon.
In another bowl, whisk together buttermilk, egg, and maple syrup until blended. Make a well in the center of the dry ingredients and pour in the wet ingredients. Whisk to combine; a few lumps are OK.
Preheat your griddle to 350°F or set a frying pan over medium heat. Once warm, flick a few drops of water onto the griddle; if they droplets scatter it is hot enough.
Pour batter on in 1/3 cupfuls. Cook pancakes until bubbles start to form and edges look dry, then flip and cook until golden. Keep pancakes warm on a plate in the microwave or low oven while you repeat with remaining batter.