Oatmeal Peanut Butter Chocolate Chip Scones

INGREDIENTS

• 2 cups all-purpose flour
• 1 cup traditional rolled oats
• 1/3 cup dark brown sugar
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• ¼ teaspoon salt
• 6 tablespoons (3 ounces) cold unsalted butter, cut into small pieces
• ¾ cup buttermilk
• 1 egg, separated
• ½ cup chunky peanut butter
• 1 cup semisweet chocolate chips
• Raw sugar, for sprinkling