Heat up an electric frying pan or griddle until it is very hot and spray with cooking spray. In mixing bowl, combine oat flour, baking soda and salt and mix well. Add lightly beaten egg white, buttermilk and vanilla extract and stir to combine. Mix in blueberries. Pour onto griddle in 1/8 cup measures and allow the edges to firm up. These will not bubble like regular pancakes, you will want to flip them when the edges become opaque. Cook time will be approx 2 minutes per side. Serve with sugar-free or calorie free (Walden Farms makes a good one) pancake syrup.