Whisk together oats, flour, baking powder, soda, and salt in a small bowl. Set aside.
In a large bowl, whisk together the brown sugar, eggs, oil, vanilla, and buttermilk.
Lightly stir the dry ingredients into the buttermilk mixture.
Pour or spoon batter onto a medium low skillet.
Cook till lightly browned, then flip and cook on the second side.
Serve hot with butter and syrup, or your choice of toppings.