Beat the butter, egg, sugar and vanilla until well combined. Whisk in salt, mashed banana and buttermilk.
Add the flour, oat flour, pinch of salt and baking soda and fold lightly until it has all combined.
Lightly fold in the blueberries ensuring that you don’t break up or arrange them onto each pancake once in the pan.
Heat a non-stick frying pan and add a small amount of butter to coat.
Once this is bubbling, dollop about ¼ cup of the mixture in mounds in the pan, and fry over medium heat until golden brown on each side. Flip the pancakes once bubbles start appearing on the surface.
Keep the pancakes warm in a low oven until ready to serve.