Preheat your waffle iron according to the manufacturer's instructions, ensuring it reaches a proper cooking temperature. Lightly spray the plates with non-stick cooking spray.

In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt until well combined. Create a well in the center for the wet mixture.

In a separate medium bowl, crack the eggs and whisk them smoothly. Add the milk, melted butter, and vanilla and mix until fully combined.

Carefully pour the wet ingredients into the well you've created in the dry mixture. Gently fold together until just combined.

Scoop about 1/4 to 1/2 cup of batter into the preheated waffle iron. Close the lid and cook for approximately 4-5 minutes or until golden brown.

Once cooked, carefully remove the waffles using a fork or tongs. Serve immediately with toppings or store in an airtight container.