Combine all ingredients in a large mixing bowl, until smooth. If batter is too thick stir in an additional 1 to 2 tablespoons of liquid egg whites. Heat a griddle or large non-stick skillet over medium heat. Spray with a non-stick, all-natural cooking spray. Pour about ¼ cup of batter onto griddle. Flip when bubbles on top burst, about 5 minutes. Cook for another couple of minutes and until pancakes are golden brown. Repeat with remaining batches.