In large mixing bowl add 2 cups of buttermilk, 1/2 cup melted butter, and two egg yolk. Mix till just combined.

Add the entire package of baking mix to the buttermilk mixture and mix till just combined

In separate mixing bowl, whisk the egg whites till soft peaks form.

Gently mix the whipped egg whites into the batter mixture.

Measure approximately 1 cup of mixture into hot waffle iron. Waffle is done when no longer steaming and cooked golden brown to your liking.