In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
Mix the buttermilk and the melted butter together in a large capacity measuring cup. Add in the beaten egg and vanilla extract then stir together.
Pour the buttermilk mixture into the flour mixture. Mix together until combined, the batter should still be a little bit lumpy but not too much! Try not to over mix.
Preheat your waffle iron according to the manufacturer's instructions.
Pour the batter into the preheated waffle iron according to manufacturer's instructions, mine is a 1/3 cup per waffle.
Set the cooking time to whatever you desire according to your waffle maker. These are best done to a medium brown.
Crisp in the Oven
If desired, set your oven to 250 °F. Place the waffles on a baking sheet and heat for 7-8 minutes. Remove and serve!
Notes
Make sure to fully heat your waffle iron before making the first batch or they will cook unevenly
Yield will depend on the size of your waffle maker, but there is enough batter for servings for 4 people