Preheat a griddle to 400 degrees or medium heat. (I’ve noticed that many griddles cook differently even at the same temperature!)
Combine the flour, baking powder, baking soda and salt in a large mixing bowl.
In a blender combine the buttermilk, eggs, vanilla, maple syrup, spinach and melted butter until completely smooth.
Pour the wet mixture into the dry ingredients and stir until just combined.
Brush the griddle with coconut oil and spoon about ¼ cup of batter onto the griddle. When bubbles start to form on the surface of the pancake and the edges become slightly dry, flip it over and cook until down. Maintain the heat on medium-low or 400 degrees.