Step 1: In a large bowl, whisk together flour, sugar, baking powder, baking soda, salt, and cinnamon.
Step 2: In a separate bowl, whisk buttermilk, egg, melted butter, and vanilla extract until smooth.
Step 3: Pour wet ingredients into dry ingredients and stir gently until just combined; do not overmix.
Step 4: Heat a non-stick skillet or griddle over medium heat and lightly grease with butter or oil.
Step 5: Pour 1/4 cup batter per pancake onto skillet and cook until bubbles form on surface, about 2-3 minutes.
Step 6: Flip pancakes and cook until golden brown on the other side, about 1-2 minutes more.
Step 7: Serve warm with maple syrup and additional butter if desired.