In a blender, combine egg whites, Greek yogurt, oat flour, hemp seeds, half of the banana, cinnamon, vanilla, baking powder, and sea salt.
Blend on high until the batter is completely smooth and frothy.
Heat a large non-stick skillet over medium heat and lightly coat with half of the ghee.
Pour the batter into the skillet to form 3-4 pancakes, cooking for 3 minutes until bubbles form on the surface.
Flip the pancakes carefully and cook for another 2 minutes until golden brown, then remove from the pan.
Slice the remaining half of the banana into rounds.
In the same skillet, add the remaining ghee and maple syrup over medium-high heat.
Add the banana slices to the pan and sear for 1 minute per side until they are soft and caramelized.
Stack the pancakes and top with the warm caramelized bananas and any remaining pan glaze.