In a large bowl, combine the flour, oats, baking powder and baking soda.
In a medium bowl, combine the milk, brown sugar, and oil; add to the flour mixture, stir until almost blended.
Fold in blueberries until just mixed.
In a medium bowl, beat egg whites with electric mixer until they form soft peaks.
Fold egg white into batter.
In a greased, heated waffle iron, pour 1/2 cup batter into the iron (will depend on the size of the iron); cook for 5 minutes, or until steam no longer escapes from under the waffle iron lid, and the waffle is golden.
Yield 8 waffles.
NOTE: if making pancakes, you may use 1 egg insead of 2 egg whites, however, still seperate the egg and beat the white(s).