Place the rolled oats in a high-speed blender and pulse until they reach a fine, flour-like consistency.
Add the liquid egg whites, Greek yogurt, half of the banana, cinnamon, baking powder, sea salt, and vanilla extract to the blender.
Blend on high until the batter is completely smooth and slightly aerated.
Heat a large non-stick skillet over medium-low heat and lightly coat with 0.5 tsp of the ghee.
Pour the batter into the skillet to form three to four pancakes, cooking for 3-4 minutes until bubbles form on the surface and edges look set.
Flip carefully and cook for another 2 minutes until the pancakes are golden brown and firm to the touch.
While the pancakes finish, slice the remaining half of the banana into rounds.
Remove pancakes from the pan, then add the remaining 0.5 tsp of ghee and the maple syrup to the same skillet.
Place banana slices in the skillet and sear for 1 minute per side until they are deeply caramelized and fragrant.
Stack the pancakes on a plate and top with the warm caramelized banana slices.