In a large mixing bowl whisk the flour, oat bran, baking powder, baking soda, and salt.
In a smaller bowl whisk together the buttermilk, eggs, oil, and vanilla.
Pour the liquid ingredients into the dry ingredients and stir together. Do not over mix, lumps are beneficial.
Heat a griddle to 350 degrees and allow the batter to sit the time it takes for the griddle to heat.
Fold the blueberries into the batter with a spatula.
Scoop 1/4 cup pancake batter on to the hot griddle. Once the pancakes have set on the sides and have bubbles on top flip them and cook on the other side until light and fluffy. About 3 minutes per side. Continue until all batter is used.