Mix together flour, baking powder, baking soda, brown sugar, salt in a large bowl.
In a separate bowl, whisk egg, buttermilk, vanilla until smooth.
Incorporate the wet ingredients into the dry ingredients until smooth but do not overmix. Some lumps are okay,
Cut some of the blackberries in half and incorporate into the batter. Save some whole for topping the pancakes.
Heat a few tablespoons coconut oil on medium heat on a cast iron skillet. Spoon in the pancake batter and fry until several deep bubbles start to form, then carefully flip. Repeat this process until you've used up all the batter, adding more coconut oil as needed.
Serve pancakes hot with more blackberries, butter, and pure maple syrup.
Recipe by at https://gouramanda.com/blackberry-buttermilk-pancakes/