In a high-speed blender, combine the egg whites, Greek yogurt, vanilla protein powder, rolled oats, half of the banana, ground cinnamon, baking powder, sea salt, and vanilla extract.
Process on high speed until the batter is completely smooth and the oats are finely ground.
Heat a large non-stick skillet over medium heat and lightly grease with half of the ghee.
Pour the batter into the skillet to form three or four small pancakes; cook for 2-3 minutes until bubbles form on the surface.
Flip the pancakes carefully and cook for another 1-2 minutes until golden brown and set.
While the pancakes finish, slice the remaining half of the banana into rounds.
In a separate small pan over medium-high heat, melt the remaining ghee and sear the banana slices for 1 minute per side until they are caramelized and golden.
Stack the pancakes on a plate and top with the warm caramelized banana slices.