Ingredients

• 2 ½ cups all-purpose flour
• 1 ½ cups rolled oats
• 3 tablespoons white sugar
• 2 tablespoons baking powder
• 1 ½ teaspoons salt
• 4 large eggs, separated
• 1 ½ cups buttermilk
• 1 cup milk
• ½ cup butter, melted
• 1 ½ teaspoons vanilla extract