In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt until well mixed.

In another bowl, combine the buttermilk, egg, melted butter, and vanilla extract. Whisk until smooth.

Pour the wet ingredients into the dry ingredients and mix gently until just combined. Be careful not to overmix!

Preheat a non-stick skillet over medium heat and lightly grease it with a bit of butter or oil.

Pour about 1/4 cup of batter onto the skillet for each pancake.

Cook until bubbles form on the surface, then carefully flip and cook until golden brown on the other side.

In a small bowl, mix the remaining sugar and cinnamon together.

Once the pancakes are cooked, sprinkle them with the cinnamon-sugar mixture while they are still warm.

Serve warm with your favorite syrup or toppings, and enjoy!