Preheat your waffle iron to the manufacturer's recommended temperature.

In a medium bowl, whisk together the coconut flour, sugar, baking soda, and salt until well combined.

In a 2-cup measuring cup, whisk together the milk, melted butter, eggs, and vanilla extract.

Whisk the milk mixture into the coconut flour mixture until well combined and no longer lumpy, about 30 seconds.

Portion 3-4 tbsp of batter onto the center of each waffle cavity.

Cook the waffles according to your specific waffle iron instructions, until golden brown and no longer steaming, typically 3-5 minutes. Serve warm with your favorite waffle toppings.