Preheat your waffle iron.

In a large bowl, beat the melted butter with eggs. Beat in the buttermilk.

In a medium bowl, mix the flour, baking powder, baking soda, salt, and cinnamon sugar.

Whisk the dry ingredients into the wet, until incorporated.

Bake in the waffle iron until done (follow the directions for your specific waffle iron).

Serve with various delicious toppings.