In one bowl mix flour, sugar, baking soda, baking powder and salt into a bowl (add cinnamon now if you like)

In another bowl, mix buttermilk, 3 beaten eggs and vanilla in another bowl.

Add melted butter to buttermilk mixture.

Combine all dry and wet ingredients together and do not over mix. It is ok to have lumps.

Spray waffle maker with baking nonstick spray.

Follow waffle maker directions for time.