Measure flour, baking powder, salt, and baking soda into a large mixing bowl.
In a separate bowl, combine egg, buttermilk, brown sugar, and oil.
Pour wet ingredients into dry ingredients and stir just until moistened. Batter should be slightly lumpy. Let batter rest while you heat the pan.
Lightly spray or oil your griddle and preheat over medium heat. Pour ¼ cup of batter for each pancake onto hot griddle.
Flip the pancake when bubbles start to appear on the surface. Serve with warmed pure maple syrup.