Place the egg whites, Greek yogurt, rolled oats, half of the banana, vanilla extract, cinnamon, baking powder, and sea salt into a high-speed blender.
Blend on high for 30-45 seconds until the batter is completely smooth and the oats are fully incorporated.
Heat a large non-stick skillet over medium-low heat and lightly grease with half of the ghee.
Pour the batter into the skillet to form 3 or 4 small pancakes, cooking for 3 minutes until small bubbles form on the surface.
Carefully flip the pancakes and cook for another 2 minutes until the centers are set and the outsides are golden brown.
While the pancakes finish, slice the remaining half of the banana into 1/4-inch thick rounds.
Remove the pancakes from the pan and add the remaining ghee along with the banana slices.
Sear the banana slices for 1 minute per side until they develop a deep golden-brown caramelized crust.
Stack the pancakes on a plate and crown them with the warm caramelized banana slices.