Preheat the oven to 200(F) Degrees. In a small bowl, combine the buttermilk, flour, egg white, baking soda, vanilla, and salt. Whisk just until blended. Stir in the blueberries. Let stand for 10 minutes. Heat a large nonstick skillet over medium heat until it is hot enough for a spritz of water to sizzle on it. Mist pan lightly with I Can't Believe It's Not Butter cooking spray. Pour the batter in 1/8 cup dollops onto the skillet to form 3 or 4 pancakes. Cook for about 2 minutes, or until bubble appear on the tops and the bottoms are golden brown. Flip. Cook for about 2 minutes or until browned on the bottom. Transfer to an oven-proof plate. Place in the oven to keep warm. Repeat with cooking spray and the remaining batter to make 8 pancakes total.