In a small microwave-safe bowl, melt butter for one minute and set aside.
Next, separate the egg yolks from the egg whites.
In a small bowl, mix the flour, salt, and baking powder.
In a separate large bowl, add melted butter, vanilla extract, and sugar. Lightly mix the wet ingredients before adding the sour cream. Whisk the sour cream into the mixture to remove any large lumps.
Lastly add the heavy cream, water, and egg yolks whisk all wet ingredients together.
Next, using a hand mixer beat the egg whites on a high speed for one to two minutes until stiff peaks form.
Sift the dry ingredients into the wet batter and mix until well combined.
Fold in the egg whites gently until there are no streaks of egg whites.
Let the waffle batter sit on the counter while the waffle maker is preheated according to the machine's instructions.
Use a measuring cup (approximately 3/4 cup of batter per waffle) or ladle to pour the waffle batter into the greased waffle maker, to create even portions and prevent the batter from overflowing.
Cook the waffle on your iron setting of choice (Light to Dark setting) following your machine settings, 3-6 minutes is an average range for most models.
The waffle iron steam is an indicator the waffle is close to doneness. Once the waffle is done place on a wire rack to cool or serve to order while hot.
Repeat for each waffle and add non-stick spray on the iron in between each waffle.
Serve with warm maple syrup and whipped butter for the perfect touch.