"Instant" Pancake Mix

INGREDIENTS

• 6 cups all-purpose flour
• 3 teaspoons baking powder
• 4 tablespoons melted butter
• 2 cups "Instant" Pancake Mix, recipe above
• 1 stick butter, for greasing the pan
• 1 1/2 teaspoons baking soda (check expiration date first)
• 2 tablespoons sugar
• 2 eggs, separated
• 2 cups buttermilk
• 1 tablespoon kosher salt
• 2 cups fresh fruit such as blueberries, if desired