Whisk flour, sugar, baking powder, baking soda and salt in a medium bowl.
Add egg, half of the butter and pour buttermilk in the bowl. Whisk until a smooth batter forms.
Heat a non-stick skillet on medium heat and grease with remaining butter. Pour ¼ cup of pancake batter to make one pancake. Cook until the pancake rises and bubble form around the edges, then flip to the other side. Repeat the same until no more batter is left.
Serve with extra butter, syrup, jam, fruit, or other toppings.